TWI233071B - Display apparatus - Google Patents

Abstract

The present invention provides a display apparatus, which comprises a display portion having a plurality of display elements arranged in a matrix; a driving voltage generation circuit for generating the driving voltage for driving the display elements; a data line driving circuit for generating the signal voltage for controlling the current amount of the driving voltage based on the displayed data; a scanning line driving circuit for selecting the display elements to be driven; and, a pixel lightening control circuit for controlling the lightening time of display elements according to the distance of current path from the driving voltage generation circuit to the display elements.

Description

1233071 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a display device using a self-luminous element represented by a light-emitting diode (LED) and an organic EL (Electro Uiminescence) element as a display element . [Prior Art] Japanese Patent Application No. jP-A-10-223373 has disclosed that the cathode pattern of an odd-numbered column is drawn to one side of the substrate, and the cathode pattern of the even-numbered row is drawn to the other side opposite to it. A display device that keeps the brightness distribution of the entire screen uniform. This patent application JH2000-194428 has disclosed that a constant current source that prepares a majority (for example, 5) to drive an organic eL element is used to selectively control these constant current sources to change the current flowing to the organic EL element, thereby eliminating various A driving device for an organic EL element having uneven brightness due to a deviation of a constant current source and a deviation of a forward current of each organic EL element. Japanese Patent Application No. JP-A_20000-194428 discloses the use of adjustment point time to adjust the brightness. The Japanese patent application JP_A_2000-187467 has disclosed that the current flowing to the organic EL element is detected by a current detection circuit, and the next lighting time is controlled according to the detected current value. It can also be used when the detection element has dispersion or deterioration Detect the brightness change caused by it, correct it, and perform good tone control. U.S. Patent Application No. 629 1942 (Japanese Patent Application No. JP-A-2001-13903) has disclosed that the

O: \ 88 \ 88204.DOC 1233071 The current value or time or brightness produces degradation information about the degradation state, based on the time between the time when the voltage is applied to the self-luminous display element or the time when no voltage is applied. In the invention described in Japanese patent application m1G_223373, the rows with higher brightness and the rows with lower brightness are alternately generated at the ends of the shiba noodles. ^ ° 卩 on the denier surface produces unevenness and self-luminous elements. Because the current corresponding to the receptive current flows to the lit pixels, the amount of power supply current will vary depending on the number of pixels lit, and the degree of brightness reduction will also vary depending on the content of the display data. On the other hand, in the invention described in Japanese Patent Application JP-A-10-223373, it is considered that a difference in voltage drop occurs between a light emitting point close to the extraction portion of the electrode pattern and a relatively light emitting point. Problems, but no progress has been taken into account the problem that the degree of π degree reduction will vary depending on the content of the displayed data. Although the invention described in this patent application No. Ba-2000-194428 is advertised to eliminate unevenness in the Brahman degree caused by the deviation of each constant current source and the deviation of the forward current of each organic EL element, No consideration has been given to the problem of the decrease in Brahma caused by the decrease in the wiring of the source to the display element and the decrease in the uneven brightness caused by its deviation. This patent application JP-a-2〇〇 (M94428, Japanese patent application JP A 2000 187467, US patent application us Patent No. 6291942 (Japanese patent application jp_A-2〇〇1_139〇3) Although the recorded invention claims to be able to correct the variation in brightness caused by the dispersion and deterioration of the display element (k over time), the invention has been

O: \ 88 \ 88204.DOC 1233071 The brightness drop caused by the voltage drop of the wiring is not uniform. ^ ^-And, the brightness caused by the deviation is low, and Ya has not considered it. [Summary of the Invention] An object of the present invention is to provide a display device which can reduce the deviation of the arrangement position of the uncommon pieces. It is an object of the present invention to provide a display device which can reduce the brightness deviation caused by 4 drops in the wiring from the electric / claw source to the display element. According to the distance from the generating circuit used to generate the driving voltage for driving the display element to the display, the point of the display element is redundant (driving time). Because the display elements are arranged in a moment, the distance from the divergent money generating circuit to the display elements depends on the dry element configuration position of the display elements. Therefore, the present invention can make the lighting time differ according to the arrangement position of the display element. According to the present invention, it is possible to reduce the brightness deviation caused by the arrangement position of the display element. According to this description, the brightness deviation caused by the voltage drop from the wiring of the current source to the display element can be reduced. [Embodiment] Hereinafter, a first embodiment of the present invention will be described in detail using drawings. FIG. 1 is a configuration diagram of a display device according to a first embodiment of the present invention. The vertical synchronization signal 1 is a signal indicating display-picture period (period). The horizontal synchronization signal 2 is a signal indicating horizontal synchronization. The data allowable signal 3 is a signal indicating the period during which the display data 4 is valid or invalid (display valid period). All these signals are externally synchronized with the synchronous clock pulse 5 (e.g.

O: \ 88 \ 88204.DOC -9-1233071 brain, etc.) is entered. In this first embodiment, one of the display data is copied from the upper left pixel in the form of a thumb scan one by one, and the information is composed of 4-bit color data. 6 is display control: prime 7 is the shell line control signal, 8 is the scan line control signal, 9 is the storage ^ command signal, H) is the storage. Read the address, and save the data 'sub = surface storage circuit '13 read the data for the screen. The display control unit 用于 is used to store the daytime storage circuit (frame memory) 12 which can be temporarily stored in one of the displayable storage units 25 (to be described later) and the display data 4 of the overnight screen. ^ Order Signal 9, store and read address 10, store data u. Also ^ display: = is used to generate the storage, readout command signal 9, storage. Readout address 10 in order to read out one screen of display data in accordance with the display time of the display section 25. The screen storage circuit 12 is in accordance with the save.read command signal 9, save. Read address, store the stored data, or read the screen read data, 3. The display control unit 6 generates data line control signals from daytime reading data 13 and scans

The line control signal 8. 14 is the data line drive circuit, 15 is the data line drive J, 16 is the scan line drive circuit, 17 is the scan line drive disturbance voltage generating circuit, 19 is the drive reference voltage, and 20 is the constant current system. Circuit, 24 is a pixel lighting control signal, and 25 is a self-luminous element display. The display section 25 has a self-light-emitting element using a light-emitting diode or an organic EL element as a display element. Most of the self-light emitting elements (pixels) of the display section 25 are arranged in a matrix. When each pixel is selected by 16 scanning line driving circuits, 21 is current detection information, 22 is driving voltage, and 23 is scanning line driving signal 17 of pixel lighting control output, which can be selected according to the data line driving circuit 14 output. The application of the signal voltage of the data line driving signal 15 and the pixel lighting control output of the pixel π control circuit 23 according to O: \ 88 \ 88204.DOC -10- 1233071 a pixel lighting control signal 24 performs the lighting control operation. Here, the constant current detection circuit 20 is used to detect the driving voltage 22 and output the information of the current amount as the current detection information 21. The pixel point redundancy control circuit 23 is based on the scanning line control signal 8 and the current detection lean signal 21. The output pixel lighting control signal 24 controls the lighting time of the pixel. A voltage for driving the self-luminous element is supplied as the driving voltage 22. The scanning line driving circuit 16 and the pixel lighting control circuit 23 may be implemented as a single LSI. In the i-th embodiment, the display unit has a resolution of 640x480 dots. The display unit 25 can adjust the brightness displayed by the self-light-emitting element by using the amount of current flowing to the self-light-emitting element or the lighting time of the self-light-emitting element. As the amount of current flowing to the self-emitting device increases, the brightness of the self-emitting device increases. As the time of the self-light-emitting element increases, the brightness of the self-light-emitting element will increase. The data line driving circuit 14 generates a signal voltage in accordance with the display data, and uses the signal voltage to control the amount of current of the driving voltage supplied to the self-luminous element. Fig. 2 is a diagram showing the internal structure of the display unit µ in the first embodiment of the present invention. An example of a case where an organic EL element is used as a self-luminous element is shown. 26 series first data line, 27 series second data line, 28 series first scan line, 29 series 480 scan line, 30 series first lighting control line, 31 series 48th lighting control line, 32 series organic EL drive voltage supply line, 33 is the organic EL drive voltage supply line in the first row, 34 is the organic EL drive voltage supply line in the second row, 35 is the pixel in the first row and i row, and 36 is the pixel in the first row and second row. 37 is the 480th column of the first row of pixels, 38 is the 480th column of the second row of pixels. The signal voltage is supplied through each data line to the pixels in the row selected by the scanning line selection voltage flowing to each scanning line.

O: \ 88 \ 88204.DOC -11-1233071 The redundant control lines at each point determine the pixels that are in the lighted state, and the organic fairy driving voltages supplied by the organic EL drive voltage supply lines of each row are used to control the pixels to light up according to the signal voltage. Here, the pixels 35 are displayed only in the pixels 35 of the column and row. The structure of 像素 is the same, but the pixels of the first row and the second row of pixels 36, the 480th column of the first row of pixels 37, and the 480th column of the second row of pixels 38 also have the same structure. 39 series pixel driver, 40 series switching transistor, 41 series write capacitor, 42 series drive transistor, 43 series lighting control switch, 44 series organic EL. The “pixel driving unit” controls the current flowing to the organic EL44 in response to the signal voltage. The pixel driving unit 39 includes a PJ1 transistor 40, a writing capacitor 41, and a driving transistor 42. The transistor 40 is scanned by the first scan. The line 28 is in the energized state, and the signal voltage supplied by the i-th data line% is stored in the writing capacitor, and the stored voltage is used to control the amount of current flowing through the driving transistor 42. The current controlled by the driving transistor 42 is at the point of compliance During the lighting time controlled by the light control switch 43, it flows to the organic EL44, so that the organic EL44 emits light during the lighting time according to the brightness according to the amount of current. In addition, the control switch 43 uses the control signal "High" ), Or "Low (Low level)" and execute the action, here, "High (when the high level is wide, the switch is in" ΌN (ON) ", that is, the current becomes conductive, L0w ( At the low level Γ, the switch is “OFF”, that is, the current is stopped. However, the opposite is also possible. The number of pixels of the display unit 25 is 640x480 pixels, so the scanning line, that is, the horizontal line is vertical. Direction by i There are 480 trace lines 28 to 48th scan lines 29 arranged; 640 data lines, that is, vertical lines are arranged horizontally by 丨 data lines 26, 2 data lines 27 to 640 data lines. In addition, organic El drive The voltage supply line 32 is disposed below the display portion 25. In the organic el

O: \ 88 \ 88204.DOC > 12- 1233071 driving voltage supply line 32, which connects 640 vertical (row direction) lines in the horizontal direction (column direction) (such as the organic EL drive voltage supply line 33 in the first row and The second row of the organic EL driving voltage supply line 34) will be described below. Therefore, the organic EL drive voltage supply line 32 and the organic EL drive voltage supply line 34 in the first row and the organic EL drive voltage supply line 32 are arranged in a matrix form from the lower side to the upper side of the display section 25. The pixel row soap level (either 1 line unit or most line units) is supplied to the pixel. When the lighting time of most organic EL44s is the same, the display brightness of the pixels located on the lower side of the row direction (close to the supply point of the driving voltage) will be relatively increased and located on the upper side of the row direction (away from the supply point of the driving voltage) (Side), the display brightness of pixels will be relatively reduced. Therefore, it is necessary to control the lighting time of the organic EL44. The organic power supply line µ may be disposed on the upper side of the display unit 25. At this time, the driving voltage is supplied from the organic EL driving electric supply line 32 arranged on the upper side through the organic el driving voltage supplying line 33 on the i-th row and the organic EL driving electric supply on the second row from the upper side of the display section 25 downward. On the other hand, the pixels are arranged in rows of pixels arranged in a matrix (can be ordered as a unit or a plurality of rows). Therefore, if the lighting time of the organic EL44 is the same, the number of pixels will be the same, and it will be located on the upper side of the row direction (to the side of the supply point of the packer). The display brightness of the pixel will be relatively increased, ^ n is located on the lower side of the （direction (away from low. In addition, the display brightness of the pixel and element will be relatively reduced-In addition, the organic EL driving voltage supply line 32 can also be arranged on the display 25 the upper side and the lower side, and the behavior unit six, the upper side # 丨 s s spleen, "cylinders are formed alternately by the display unit 25 driving voltage is supplied to the pixel and the display unit M below

O: \ 88 \ 88204.DOC -13- 1233071 A case where a driving voltage is supplied to a pixel. The organic el driving voltage supply line 32 may be disposed on the right side of the display unit 25. At this time, in the organic driving voltage supply line 32, two lines of 480 horizontal directions (for example, the organic EL driving voltage supply line in the i-th row and the organic EL driving voltage supply line in the second row) are connected in the vertical direction. At this time, the driving voltage is arranged from the organic £ 1 ^ driving voltage supply line 32 on the right side through the organic EL driving electrode supply line in the first row and the organic EL driving voltage supply line in the second row from the right side to the left side of the display section 25. , Is supplied to the pixels in a column unit of pixels arranged in a matrix (either a unit of ⑺ or a unit of a plurality of columns (for example, 2 or 3 columns). For this reason, when the same organic EL44 lighting time is used to make most pixels display the same brightness, the display brightness of the pixel on the right side of the (歹) direction (close to the side of the supply point of the driving voltage) will be relatively increased. The display brightness of the pixels located on the left side of the column direction (away from the driving power [i, the side of the corresponding point) will be relatively reduced. The ML driving power supply line 32 may be disposed on the left side of the display portion h. This = dynamic voltage is provided by the organic rainbow drive electric waste supply line M on the left side: the organic EL drive voltage supply line of the first order and the organic EL drive voltage supply line of the second row are from the left side to the right side of the display section 25, and Column units of pixels arranged in a matrix (either 1 column as a unit or a plurality of columns (for example, 2 or 3 columns) are supplied to the pixels. Therefore, if you want to use the same organic '..', υ and τ to make most pixels display the same brightness, the display of the pixel located on the left side of the column direction (close to the supply point of the driving voltage) is bright and bright Relatively, the display brightness of the pixels located on the right side of the row direction (away from the side that drives the power supply ...) will be relatively reduced. In addition, the organic rainbow-driven electric dust supply line 32 may be disposed on the left and right sides of the display section 25.

O: \ 88 \ 88204.DOC -14- 1233071 The case where the driving voltage is supplied to the pixels from the left side of the display section 25 and the case where the driving voltage is supplied to the pixels is formed alternately in units of 仃. FIG. 3 is an operation diagram of each scanning line of a scanning line driving signal and a pixel lighting control signal according to an embodiment of the present invention. In FIG. 3, 45 is the i-th scanning signal =, 46 is the 丨 th scanning line driving period, 47 is the second scanning signal, and 48 is the second scanning line driving period. 49 is the third scanning signal and 50 is the third Scan line drive cycle, 51 is the first! Scan line lighting control signal, 52 is the i-th scanning line lighting period, 53 is the second scanning line lighting control signal, 54 is the second scanning line lighting period, 55 is the third scanning line lighting control signal,% It is the period during which the third scanning line is lit: in each scanning signal, the second scanning signal 47 is a signal that is sequentially shifted after the i-th scanning signal is completed, and the third scanning signal is the second scanning hole number 47, Signal that shifts one after the other. Therefore, the first scanning line driving cycle 46, the second scanning line driving cycle 48, and the third scanning line driving cycle are cycles in which signals are written. 'Here' refers to the time it takes to perform a full line writing: This time is preferably all the same time. The lighting control signal of each scanning line becomes "Hlgh" after the rising of the scanning signal corresponding to each scanning line, and becomes "Hlgh" after an arbitrary period before the next writer, "Lqw ". Pixels are lit only during the period of "High". But the reverse is also possible. This period can be set according to each scan line. Therefore, the i-th scan line is lit during the period 5 2, the second scan line is the Vatican period 54, and the third The scanning line lighting periods 56 are all different periods. In addition, the scanning signal may be sequentially shifted in units of i scanning lines, or may be sequentially shifted in units of most (for example, 2 or 3) scanning lines. t or more scan lines.

O: \ 88 \ 88204.DOC -15-1233071 FIG. 4A is a structural diagram of only the driving transistor and the organic el in the first embodiment of the present invention. FIG. 4B is a graph showing the relationship between signal voltage and current. 57 is an organic EL driving voltage, 58 is a write voltage, 59 is a source-gate voltage, 60 is a source-drain voltage, and 61 is an organic EL current. The driving transistor 42 controls the organic EL current 61 by the relationship between the source-gate voltage 59 and the source-drain voltage 60 which are determined by the organic EL driving voltage 57 and the write voltage 58 so as to emit organic light 144. 62 is the voltage-current characteristic of the driving transistor, 63 is the organic EL voltage-current characteristic, 64 is the operating point of the organic EL, and the horizontal axis of the driving transistor voltage-current characteristic 62 is taken from the source of the driving transistor 42 to the drain voltage 60. Value, the vertical axis takes the current from the voltage to the driving transistor 42, which represents a certain source-gate voltage 59, that is, the characteristic of a certain signal voltage 58. Organic EL voltage_Current characteristics 63: When a certain organic B driving voltage 57 is applied, the organic EL voltage derived from the source-drain voltage 60 on the horizontal axis is taken as the organic EL voltage flowing at that voltage. The current 61 serves as its vertical axis. Therefore, the organic EL operating point constituting the intersection of the two lines under the condition of a certain organic EL driving voltage 57 represents the value of the organic El current 61 flowing when a certain signal voltage 58 is applied. In FIG. 4B, the curve of the source-drain voltage characteristics of the driving transistor 42 for a certain signal voltage 58 is superimposed by the difference between the driving voltage 57 and the source-drain voltage 60. A graph of the organic EL voltage-current characteristics of the characteristics of the organic EL current 61 to the voltage applied to the organic el. From the intersection of these two characteristics, the value of the organic EL current 61 for the conditions of organic EL driving voltage and signal voltage 5 8 is Ia. 70 is the voltage-current characteristic of the driving transistor when the organic EL driving voltage is low, and 71 is low Organic EL voltage_current characteristics when organic EL drive voltage, 72 is low organic

O: \ 88 \ 88204.DOC -16- 1233071 Organic EL operating point at EL driving voltage. When the organic EL driving voltage 57 decreases, the source-to-drain voltage 60 decreases, and the driving transistor voltage-current characteristic 62 changes like the driving transistor voltage_current characteristic 70 when the organic EL driving voltage is low. In the same situation, when the organic EL driving voltage 57 is reduced, the organic EL voltage of the source _ drain voltage of the same value will be reduced, and the driving transistor voltage-organic voltage current characteristic 62 will be the same as the organic EL voltage and current when the organic EL driving voltage is low. Characteristic 71 changes. When there is a motor voltage from the intersection point, the organic EL operating point 72 will reduce the organic EL current from Ia to Ib. Therefore, here, a decrease in the driving voltage of the organic EL indicates a decrease in the organic EL current 61, that is, a display causes a decrease in brightness. FIG. 5A is a structural diagram of an organic driving voltage supply line and a pixel during a white display according to the first embodiment of the present invention. Fig. 5B shows the relationship between the pixel position (distance from the power supply point to the pixel) and the driving voltage during the white display of the first yoke-shaped white display of the present invention. Fig. 5C is a structural diagram of a supply line and a pixel having a motor voltage when the intermediate dimming (tone between white and black) is displayed according to the first embodiment of the present invention. Fig. 5D shows the relationship between the pixel position (the distance from the power supply point to the pixel) and the driving voltage when the halftone (tone between white and black) is displayed in the first embodiment of the present invention. The distance from the power supply point to the pixels refers to, for example, the lengths of the organic EL driving voltage supply line 32 and the first row organic driving voltage supply line 33 from the driving voltage generating circuit 18 to the pixels in the first column and the first row. 65 is a pixel in the second column and the first row, 66 is an organic EL driving voltage in the} th column, π is a driving voltage in the second column, and 68 is a driving voltage in the 48th column. The organic rainbow driving voltage is supplied from the 480th column and the row of pixels 37 via the organic el driving voltage supply line 33 to the first row! Pixels in the row are supplied to the pixel 35 in the i-th column

O: \ 88 \ 88204.DOC -17- 1233071 The organic EL driving voltage 66 in the first column supplies the second row of pixels 65 to the second column and the first row of pixels 65, and Dong Zi's 480th column to the first row of pixels supplies the first 48 × column driving motor 68. 69 is the pixel position-driving characteristic. The horizontal axis takes the value of the pixel position represented by the distance from the power supply point (the supply point of the driving voltage), and the vertical axis takes the supply to that position. The value of the organic EL driving voltage of the pixel. The organic el drive voltage supply line 33 has a wiring resistance, and the longer the distance from the power supply point, the larger the resistance, so that the organic operating voltage has been reduced. In other words, since the pixels arranged in the vertical direction are connected to the organic EL driving voltage supply lines 33, the voltages at the lowermost pixels and the uppermost pixels will drop due to the wiring resistance, and the driving voltages to the pixels will be supplied. The state is as shown by the pixel position-driving voltage characteristic 69. 73 is the power supply inlet current during the white display, 74 is the pixel current of the first column during the white display, 75 is the pixel current of the second column during the white display, which is the image speed current of the first column during the white display, and 77 is the pixel position during the white display. _Driving voltage = sex. During white display, the organic EL current flows to the pixel, so the power supply inlet current 73 becomes maximum during white display. The organic EL dynamic voltage supply line 33 has a wiring resistance, so the larger the current flowing, the larger the voltage drop. Therefore, the pixel position-driving voltage characteristic 77 during the white display is as shown, showing a steeper characteristic, compared with the pixel current 74 of the 480th column when the white display is close to the power supply point, and the white display is farther. The i-th column image-speed electric stage 76 becomes smaller, which means that the display brightness has decreased. It is the inlet current of the power supply during the midtone display, 79 is the pixel current in the 48th column during the midtone display, 80 is the pixel current in the second column during the midtone display, 81 is the image speed current in the first column of the midtone display, and 82 is the middle Pixel position when driving display_Drive voltage

O: \ 88 \ 88204.DOC -18-1233071. During the halftone display, less current flows to the organic EL element, so the power supply inlet current 7 8 from the middle 5 weeks display is smaller than the power supply inlet current 73 during the white display. Since the organic EL drive voltage supply line 33 in the first row has wiring resistance, the current flowing therethrough becomes smaller and the voltage drop becomes smaller. Therefore, as shown in FIG. 5D, the pixel position-driving voltage characteristic 82 during the halftone display has a characteristic of a smaller steepness, and the pixel current 78 in the 480th column when the halftone display is close to the power supply point and the farther halftone display The first column does not have such a large difference as the speed current 8 丨, so the display degree of 5 will not change much. When comparing FIG. 5B and d, since the display degree of the white display is higher than that of the black display, the amount of decrease in the electric display of the white display is larger than that of the black display, and the voltage drop rate is also large. FIG. 6 is a conceptual diagram showing that the display brightness is substantially constant (uniform) by using the light emitting time corresponding to the pixel position in the first embodiment of the present invention. 6A-C are diagrams of a situation where the voltage drop is large like a white display. Figs. 6d_f are diagrams showing a case where the voltage drop is small like a full-pixel halftone display or a black display. Fig. 6A shows the uppermost part of the pixel, which is farther away from the driving voltage supply point '. Fig. 6B shows the closer to the center of the day plane closer to Fig. 6A, and Fig. Π shows the lowermost part of the closest pixel. 83 is the pixel position-organic EL current characteristic during white display. Because the current is directly proportional to the voltage, it exhibits the same characteristics as the driving electrical waste characteristics of the pixel position shown in Figure 5_. 84 is the uppermost organic EL current during white display, 85 Α ”, Μ 85 is the uppermost lighting period β when white is displayed from time to time β 6 is the organic EL current at the central portion when the uppermost light is on and effective when white is displayed, 88 is white 4 The white heart 8Q helmet is free. During the period when the central part of the driver is not illuminated, the lower part of the organic EL current is lit when the central part is white, 91 is white, and the second part is dry. During the lighting period, 92 is

O: \ 88 \ 88204.DOC -19- 1233071 When the white display is on, the lowermost part lights up the effective brightness. As shown in Fig. 6a, at the top of the screen, the uppermost organic EL current 84 during white display is small, so the uppermost lighting period 85 during white display can be extended. As shown in Fig. 6C, the lowermost organic EL current during white display 90 is larger, so it can shorten 'Monthly 91' when the white light is displayed. Therefore, the area where the uppermost organic current during white display is multiplied by the uppermost lighting period of 85 during white display. The uppermost point during white display is free of effective power 86, and the lowermost organic EL current during white display is 9 〇It is equal to white, and the lowest effective lighting brightness 92 during white display is equal to the area multiplied by the lowest lighting period 91 during display. X, as the display changes from black to white = (the hue value of the display data will increase), that is, as the display brightness increases, the voltage drop ratio (steepness) and the amount of voltage drop will increase, so it is best Increase the ratio of extended lighting time. The display brightness can be estimated from the current amount of the organic rainbow driving voltage. 6D indicates the pixel is far away from the supply point of the organic rainbow driving voltage: the uppermost case, and FIG. 6E indicates the situation near the center of the screen closer than that of FIG. 60. The figure ㈣ indicates the closest lowermost pixel. % Is in the middle, and it is the position of the material from time to time. ⑽EL current characteristics. Because M and Qian Chengzheng :, it has the same characteristics as the pixel position _ drive power generation characteristics shown in FIG. 5. 94 is the uppermost organic when displaying midtones. 0, ..., the uppermost point when displaying ... 95 is the period during which the upper finger is removed, 96 is the brightness during the midtone display, and 97 is the middle 坰 g. “Shi”, π are effective • When dry ...% Organic EL current in the central part, which is the middle tone:-In the middle of the “lighting period, 99 is the mid-tone display seasonal central effect redundancy, 100 is the middle tone display, ^ time When the tone is displayed, the most EL current is added. 101 is the middle and lower finger period. '102 is the lowest point in the middle tone display.

O: \ 88 \ 88204.DOC -20-1233071 Party effective brightness. Since the uppermost organic rainbow current during the midtone display is 9 branches, the difference between the lowermost organic anal current i 较小 during the midtone display is small, and accordingly, the uppermost lighting period 9 5 and the midtone display during the midtone display can be reduced ^ The difference between the lower lighting period 101, so that the area where the uppermost organic EL current 94 during midtone display and the uppermost lighting period% during midtone display can be multiplied by the area ^ The uppermost lighting effective brightness 96 during midtone display, Take the lower organic EL current 100 during midtone display and the area with the lowest lighting period 点亮 multiplied by the mid-tone display to multiply the area by the middle of the area, which is equal to the effective brightness% at the bottom of the display. The display control section 6 includes a storage control section and a display control signal generation section. 1: 'Storage control unit is used to generate storage. Readout command signal 9. Storage ·: Address 10' in order to output display data in accordance with the display time of the display unit 25 'The screen reading circuit 12 reads out the screen reading data 13, and in order to store the display data 4, generate a storage. Read command signal 9, storage. Read out address 10, store data U. The display control signal generating unit generates a data readout instruction signal in accordance with the display time of the display unit 25, and cooperates with the readout display display data to output the data that causes the data line drive circuit to act, and the data line control signal 7 It is used as a time signal and generates a scan line control signal including the time data used to make the scan line. The drive circuit 16 performs the operation. The display control signal generation unit 1G4 includes a basic clock pulse generation circuit, a flat counter, a vertical counter, Stored data readout time control ^ kiln-k conditioner circuit, data line drive control circuit, scan line = movement control circuit, scan start signal, and scan shift clock pulse control basic pulse generation circuit for display display section 25 To generate a basic clock pulse which is the basic control signal to be generated in the future.

O: \ 88 \ 88204.DOC -21-1233071 The number of horizontal juices is based on the basic time-reduction pulses. During the period of a horizontal period, the number of digits will be held and output as the level _I. At the end of the horizontal period, the horizontal count value is reset, and the output φ # vertically draws the vertical count time. The vertical counter is based on the vertical interval. It continuously counts in the interval _ and outputs it as the vertical leaf value. At the end of the interval _, the vertical count value is reset. The time control circuit generates a data readout instruction signal according to the horizontal count value and the vertical punch value to read out the display data stored in the two storage circuits in the storage circuit 12. The data drive control circuit is driven by the horizontal external signal, w 4 value, and vertical count value. The m-line drive circuit 14 latches the data line drive data. The data line is used to drive the time signal. The data time adjustment circuit is composed of horizontal count value and vertical count value: adjust the time of the display to match the time signal of the data line driving time signal and output it as data line driving data. The data signal is controlled by the basic clock pulse, the data line driving data, the M #, and the ten Beco lines driving 4 signals. The scanning line driving control circuit generates a scan start signal indicating the start of W within the horizontal count value. The scan shift clock pulse control circuit generates a scan pulse for shifting the scan start signal in the scan line driving circuit 16 to a scan line different in each horizontal period from the vertical count time '. The scan start signal and the scan shift clock pulse are used to form a scan line control signal 8. Fig. 7 is a diagram showing the internal configuration of the pixel lighting control circuit 23 according to the first embodiment of the present invention. 123 is a lighting start time shift circuit, 124 is a lighting start time signal of the jth scanning line, 125 is a lighting start time signal of the second scanning line, 126 is a start time signal of the third scanning line point, and 27 is the first The 479 scan line lights up start time signal, and 128 is the 480th scan line light up start time signal.

O: \ 88 \ 88204.DOC -22 · 1233071 The lighting start time shift circuit 123 shifts the scan start signal according to the scan shift clock pulse 丨 2 (), and uses the shift result as the lighting of each scan line. The first scan line of the start time lights up and the 48th scan line outputs the start time signal of 48 to 48th. In the first embodiment, the lighting start time and the scan start time are made simultaneously. However, it is also possible to make the ^ light start time after the scan start time. Reference numeral 129 is a reference time-generating circuit for reference to the lighting completion; 130 is a reference time signal for the lighting end. End of lighting Reference 4 generating circuit 129 generates an end-of-lighting reference time signal 13 from the start-of-scanning signal 12 (), which constitutes a reference time of end-of-lighting. Here, a case where an arbitrary number of scan start signals 120 are latched by the scan shift clock pulse 122 will be described below. 131 is the lighting end time shift circuit, 132 is the reference time signal for the end of the first scanning line lighting, 133 is the reference time signal for the end of the second scanning line lighting, and 134 is the reference time for the end of the third scanning line lighting, 135 is the reference time signal for the end of the 479th scan line lighting, and 136 is the reference time signal for the end of the 48th scan line lighting. The lighting end time shift circuit Hi shifts the lighting end reference time signal 1 30 according to the scan shift clock pulse 122, and uses the shift result as the first scan to indicate the lighting end time of each scanning line. The line lighting end reference time signal 132 to 48th scan line lighting end reference time signal 136 of 480 outputs. 137 is the scan line lighting end time adjustment circuit, 138 is the scan line lighting end time, U9 is the second scan line lighting end time signal, 140 is the third scan line lighting end time signal, 141 It is the end time signal of the 479th scanning line lighting, and 142 is the end time signal of the 48th scanning line lighting. Other points of the scanning line The lighting end time adjustment circuit 137 is the lighting end time base for each scanning line.

O: \ 88 \ 88204.DOC -23- 1233071 The quasi signals 132 to 136 are adjusted at any time according to the scanning line type, and the output is used as the first! The scanning line lighting end time signal 138 to 48th scanning line lighting end time signal 142. The adjustment amount of time can be set independently according to the scanning line type. In addition, each adjustment amount can be changed according to the current detection information 21. 143 is the first scanning line lighting control circuit, j 44 is the j scanning line lighting control signal, 145 is the second scanning line lighting control circuit, 146 is the second scanning line lighting control signal, and 47 is the third Scanning line lighting control circuit, 148 is the third scanning line lighting control signal, 149 is the 479th scanning line lighting control circuit, 150 is the 479th scanning line lighting control signal, and 151 is the 48th scanning line lighting control Circuit, 152 is the 480th scan line lighting control signal. Each scanning line point 7C control circuit generates a lighting control flood signal for each scanning line from the lighting start time signal and the point 7C end time signal input to each circuit. Here, the lighting control signal is a signal which becomes "High" between the lighting start time and the lighting end%, which will be described below. Therefore, the pixel lighting control circuit 23 can control the lighting control switch 43 " 〇N ”time. However, the 'pixel lighting control circuit 23 can also control the day-to-day interval of the lighting control switch 43. At this time, the lighting control signal becomes " High from the lighting end time to the lighting start time "Signal. Fig. 8 is an operation timing chart of the lighting start time shift circuit 111, the lighting end reference time generating circuit 129, and the lighting end time shift circuit 131 according to the first embodiment of the present invention. Each lighting start time signal indicates a case where the scan start signal 120 is shifted step by step in accordance with the scan shift clock pulse 122. Also, the lighting end reference time signal 13 is a signal that shifts the scanning start signal 12 to an arbitrary scanning shift clock pulse number 122, and indicates that

O: \ 88 \ 88204.DOC -24- 1233071 This is taken as the reference, and the signal shifted by one step by one according to the scan shift clock pulse 122 is used as the first scan line. The end reference time signal is 132 to 48th scan line. Turn on the end reference time signal 13 6. Fig. 9 is a timing chart of the operation of the scanning line type lighting end time adjusting circuit 137 according to the first embodiment of the present invention. 153 is the adjustment time for the end of the broom trace lighting, 154 is the adjustment time for the second scan line lighting end 155 is the adjustment time for the third scan line lighting end time, and 156 is the adjustment time for the 479th scan line lighting end time Each of the scanning line lighting end time signals 138 to 142 indicates a signal generated by delaying different scanning time adjustment amounts 153 to 156 of each scanning line lighting end reference time signal 132 to 136. FIG. 10 is the first embodiment of the present invention.丨 The first embodiment of the embodiment 丨 the scanning line lighting control circuit 143, the second scanning line lighting control circuit 145, the third scanning line lighting control circuit 147, the 479th scanning line lighting control circuit 149, and the 480th scanning line lighting control Operation time chart of the circuit 151. Each scan line lighting control signal indicates a signal from "Hlgh," from the rise of each scan line lighting start time signal to the fall of each scan line lighting end time signal. The formulas 1 through 3 are used to calculate the first scanning line lighting completion τ between the τ and 153, the second scanning line lighting end time adjustment shown in Figure 9, 54 and the third # 4 field line. The formula of the verbose end time adjustment amount 155 and the 479th scanning line lighting end time adjustment amount 1 56. Equation 1

VEL = R X iEL kernel, VEL is the organic EL driving voltage drop from the bottom to the top, R is

O: \ 88 \ 88204.DOC -25- 1233071 -e l is the driving current of the organic E L The wiring resistance from the lowest to the highest formula 2

C

EL

V

EL

Vi However, VD is the driving voltage of the organic EL, and Cel is the falling rate of the motor voltage. Equation 3 · · ·

Twn

Cel (N- l) x (N-n) χ Tf

Tf > Tb

Twn (max) However, Twn is the n-th scan line lighting end time adjustment amount, n is the number of scan lines, Tf is the scan line drive period, and Tb is the reference end time delay amount. In Equation 1 to Equation 3, the organic EL driving voltage Vel and the self-resistance scale are pre-M, and the organic EL driving current lEL is obtained from the current detection information 21, so it is not possible to determine the lighting end time of each trace. Adjustment amount Twn. Based on the above, in the first embodiment of the present invention, it is possible to detect the amount of current of the organic and driving voltages so that the information is reflected in the pixel lighting control. Brightness changes. The following “using FIG. 1 to FIG. 10 and the number 4p such as”, —port U and equation 1 to equation 3, will describe the pixel lighting control situation in this j-th implementation mode. First, the process of displaying data will be explained using a graphic worker. In FIG. W, the display unit 6 temporarily stores the display data 4 of the screen in the daytime work to store the data, and cooperates with the display time of the display unit 25 = the surface error storage circuit 12 reads out the display data for daytime reading. Produce data υ to produce

O: \ 88 \ 88204.DOC -26- 1233071 Raw data line control signal 7, scan line control signal 8. The details will be described later. The mutual storage circuit 12 is usually used when the input display data 4 and the display resolution and time of the display section 25 are different, so they can be omitted when the time is completely the same. The data line driving circuit 14 latches a data line control signal 7 including 4-bit tone information of 1 line (also multi-line), and converts it into a signal voltage for displaying pixels of the display section 25 for output. As a data line driving signal 15. Details will be described later. The scanning line driving circuit B turns out the scanning line driving signal 17 to sequentially select the scanning line of the display section. Details will be described later. The driving voltage generating circuit 18 generates a driving reference voltage 19 that is used as a reference for driving the driving voltage of the organic EL. The constant current detection circuit 20 generates a driving voltage 22 and detects a current flowing when the driving voltage 22 is supplied. , And output the current detection information 21 of the current 罝 represented by digital data. In the present embodiment, the constant current detection circuit 20 is provided after the driving voltage generating circuit 8 and before the display section 2 $ (between the driving voltage generating circuit 18 and the display section 25), but it may be Each organic EL voltage driving line (for example, the first and second EL driving voltage supply lines 33 or the second organic EL driving voltage supply line 34) provided in each row in the display section 25 may also be provided in the opposite direction of each pixel. To the electrode side, that is, the side where the current flows from the pixel (either from the outlet of the display section 25, or for each organic EL voltage driving line of each row in the display section 25 (such as the organic el driving voltage supply of the first row) The organic EL driving voltage supply line 34)) of line 33 or the second row is not limited as long as it is provided on the organic EL driving voltage supply line. In addition, when the organic EL voltage driving lines are provided in units of columns, the constant current detection circuit 20 may also be provided in each of the organic team voltage driving lines in each row in the display section 25: \ 88 \ 88204.DOC -27-1233031 (For example, the organic EL driving voltage supply line in the first row or the organic EL driving voltage supply line in the second row). The pixel lighting control circuit 23 generates a pixel lighting control signal 24 for each scanning line to control a switch provided in a pixel provided in the display section 25. Details will be described later. The display unit 25 is based on the signal voltage of the data line driving signal 15 and the pixel lighting control signal 24 lights the pixels on the scanning line selected by the scanning line driving signal 17. Details will be described later. Next, the details of the lighting operation of the display unit 25 shown in FIG. 1 will be described with reference to FIGS. 2 and 3. In FIG. 2, when the scanning line selection voltage is supplied through the scanning line 28, the switching transistor 40 is turned on, and the lean signal voltage is stored in the writing capacitor 41 through the i-th data line% to drive the transistor. 42 performs an operation as a transistor for controlling a current flowing to the organic transistor 44. According to the voltage-current characteristic of the driving transistor 42, the lighting control switch 43 which performs the “on,” and “off” operation of the lighting control signal supplied via the first lighting disturbance line 30 is supplied with the current. To organic EL44, so that organic rainbow light. here,

Although the point-free control switch 43 is expressed in the form of a switch, it is generally composed of a MOS device. However, as long as the function of the switch can be achieved, it is not necessary to worry about the circuit implemented. Next, use FIG. 3 to explain the negative control of the lighting control in the order of the scan line. In FIG. 3, when each scan signal "Η_" is selected, each scan line is selected, and the signal voltage is sequentially written to the first scan line of J t . The pixels are writing signals! < ^ Pixels are lit during the control signal "High" period. _ Detailed description of the operation 4 of the pixel lighting control circuit 23 will be described with reference to FIGS. 7 to 10. In FIG. 7, the lighting start time shift circuit 123 is shown in FIG.

O: \ 88 \ 88204.DOC -28- 1233071 The scan shift clock pulse 122 makes the scan start signal! 20 successively shifts 丨 clock pulses, and outputs 480 signals as the first! The scanning line lighting start time signal 124 to the 480th scanning line lighting start time signal 128. Here, in FIG. 8, although the first scanning line lighting start time signal 124 and the scanning start signal 120 are kept at the same time, it is not necessary to keep the same time, as long as the first scanning line lighting start time signal 124 to The phase of the start time signal 128 of the 480th scanning line is as shown in FIG. 8, and it may be in the relationship of one clock pulse portion of the shift clock pulse 122 by successive shift scanning. Therefore, as long as this phase relationship is maintained, the configuration of the lighting start time shift circuit 123 is not limited. The lighting end reference time generating circuit 129 generates a lighting end reference time signal 13 which delays the "High" portion of the scan start signal 120 for an arbitrary period as shown in Fig. 8. Tongguan will be explained later. As shown in FIG. 8, the lighting end time shift circuit 131 causes the lighting end reference time signal 13 to be sequentially shifted by one clock pulse according to the scan shift clock pulse 122 and outputs 480 signals as the first scanning line. The lighting end reference time signal 132 to the 480th scanning line are lighting end reference time signal 136. Here, in FIG. 8, although the first scanning line lighting end reference time signal 132 and the lighting end reference time signal 130 are held for the same time, it is not necessary to keep the same time as long as the first scanning line lighting is completed The phase of the reference time signal 132 to the end of the scan line lighting end of the reference time signal 136 is as shown in FIG. Therefore, as long as this phase relationship is maintained, the configuration of the lighting end time shift circuit 3m is not limited. Scanning line type lighting end time adjustment circuit 137 delays each scanning line lighting end reference time signal 132 to 136 as shown in FIG. 9

O: \ 88 \ 88204.DOC -29- 1233071 The amount of time adjustment that varies with each scan line and outputs it as the Uf trace trace end time signal 138 to the 480th scan line illumination end time signal 142 . The time adjustment amount is determined based on the current detection information 21, and the details will be described later. Finally, the i-th scanning line lighting control circuit 143, the second scanning line lighting control circuit 145, the third scanning line lighting control circuit 147, the 479th scanning line lighting control circuit 149, and the 48th scanning line lighting control The circuit i5i is shown in Fig. 10, and is used to generate the Hig ig " state from the rising of each scanning line lighting start time signal 124 to I28 to the falling of each scanning line lighting end time signal 138 to 142. The first scanning line lighting control signal 丨 4 4, the second scanning line lighting control signal 146, the third scanning line lighting control signal 148, the 479th scanning line lighting control signal 150, and the 48th scanning line point The composition of the brightness control signal 52 or more is an example for generating the lighting control signal of each scanning line, as long as each scanning line that is in the "High" state during the period different from each scanning line shown in FIG. 10 is lit. The control signal and circuit structure are infinite. Here, although 48 lines of scanning line circuits are provided, the number of change periods can be changed according to the resolution to meet the needs of all resolution displays. Finally, an example of the amount of time adjustment will be described. In the calculation of Si to Equation 3, at the design stage, the wiring resistance R, the organic el driving voltage vD, and the scanning line driving period D [] are grasped first. Then, the value of the organic EL driving current lEL is identified by the current detection information 21 to derive the adjustment amount Twn of the 11th scanning line lighting end time. In this case, in FIG. 12, it is assumed that the reference end time signal 130 for lighting up does not exceed the scanning line driving period Tf as a condition even if the delay amount of Twn when Twn becomes the maximum n = 1. The position n of the scanning line is consistent or proportional to the distance between the power supply point and the pixel. Therefore, the lighting end time adjustment O: \ 88 \ 88204.DOC -30-1233071 will be proportional to the organic EL driving current iEL and the distance between the power supply point and the pixel. The start time of the dot case is directly proportional to the scanning line driving period Tf, so the lighting time of the organic EL will be proportional to the distance between the common electric point and the pixel of the organic EL driving electrode. In addition, since it is only necessary to control the lighting time of the organic rainbow, the lighting state of one pixel during the tilt period can also be divided into a plurality of states. At this time, there are a plurality of lighting start time and lighting end time of one pixel in one frame period. Alternatively, the display brightness of the measurement pixel may be used, and the time adjustment amount may be set in accordance with the display brightness instead of detecting the current amount of the driving voltage. You can also use a brightness measurement circuit for measuring display brightness to measure the display brightness of each pixel on the screen. Alternatively, the brightness of each pixel, each pixel row, or each pixel row display luminance can be calculated from the hue data of the display data using a brightness measurement circuit. Here, although it is 5 cases that the driving voltage is supplied from the lower side of the screen, when the power supply point of the driving voltage is different or there are a plurality of points, it is only necessary to set the time adjustment amount corresponding to this. In other words, the longer the distance between the pixel and the power supply point of the driving voltage (the farther the pixel is from the power supply point), the longer the lighting time of the organic EL44 of the pixel can be prolonged. In the above-mentioned first embodiment, since the power supply point of the driving voltage is located below the display section 25, the lighting time of the organic team 44 is gradually extended as it moves from the lower side to the upper side of the display section 25. In the i-th embodiment, when the power supply point of the driving voltage is located on the upper side of the unfavorable portion 25, the lighting time of the organic EL 44 is gradually extended as it moves from the upper side to the lower side of the display portion 25. In the above-mentioned first embodiment, when the power supply point of the driving voltage is located on the right side of the display section, as the moving time from the right side of the _not device section 25 to the left side, the lighting time of the organic EM4 will

O: \ 88 \ 88204.DOC -31-1233071 gradually extended. In the i-th embodiment, when the power supply point of the driving voltage is located on the left side of the display portion 25, the lighting time of the organic EL44 gradually increases as the display portion 25 moves from the left side to the right side. However, in the organic EL44 of adjacent pixels, since the difference in the amount of voltage drop is small, the lighting time can also be controlled by using a majority (for example, 2 or 3) pixels. That is, the lighting time is the same among most pixels. Example #, when the driving voltage is supplied in a row unit, the pixel unit belonging to the adjacent column can be controlled to control the lighting time. When the driving voltage is supplied in units of columns, the lighting time can be controlled by using the pixel units belonging to adjacent rows. This simplifies the control of the organic lighting time. According to the above-mentioned first embodiment of the present invention, it is possible to control the pixel lighting time corresponding to the voltage drop corresponding to the pixel position and the amount of voltage and current of the driving power supply, and to reduce the dispersion of the same brightness on the screen or the brightness of the same display data. The effect. Hereinafter, a second embodiment of the present invention will be described in detail using drawings. FIG. 11 is a configuration diagram of a display device according to a second embodiment of the present invention. The same symbols as those in the first embodiment of the present invention have the same functions and functions as those in the first embodiment of the present invention. Reference numeral 201 is a multi-display control unit, and 202 is a scanning line second control signal. Similar to the first embodiment, the display control unit 201 generates a data line control signal 7, a scan line control signal 8, a storage / reading command signal 9, a storage / reading address 1 〇, a storage data 11 1 and At the time corresponding to the current detection information 21, a scan line second control signal 202 for writing a black display after normal display data writing is generated. 203 is a scan line second control circuit, and 204 is a scan line multiple drive. Signal, 205 is the display section. The scanning line second control circuit 203 will output the scanning line driving signal superimposed on the scanning line driving signal in accordance with the scanning line second control signal 202 of O: \ 88 \ 88204.DOC -32- 1233071 and output it as a scanning line. Multiple drive signal 204. The first multiple scan line 206 and the second multiple scan line 207 perform a 2-degree scan within a display period. Fig. 12 is a diagram showing the operation of the scanning line multiple driving signal 204 and the data line driving signal 15 in each scanning line according to the second embodiment of the present invention. 208 is the j-th multiple scan signal, 209 is the first scan line display period, 2 is the i-th scan line black display period, 211 is the second multi-scan signal, 212 is the second scan line display period, and 213 Is the second display line black display period, 2 丨 4 is the third multiple scan display, 215 is the third scan line display period, 216 is the third scan line black display period, 217 is the 480th multiple scan signal, and 218 is The 48th scan line display period, 219 is the 480th scan line black display period. Each multi-scan signal is added with the pulses for writing black data after the normal display data is written, and a signal that generates multiple (for example, 2) pulses in a display cycle is referred to here. The writing of this black data is called Scan the 2nd drive. 220 is the first scan 4 © line write data, 221 is the second scan line write data, 222 is the third scan 4 field line write data, 2 2 3 is the brother 4 8 0 scan line write data, 2 2 4 Write the shell material for the spot color. After each scan line is written, the data line drive signal is used as the black write data 224, and the black data writer is executed according to the second pulse and scan second drive time of each multiple scan signal. By adjusting the timing of this second pulse in each scanning line, the same effect as that in which the pixel lightening period is adjusted in the first application mode can be obtained. In other words, the period during which the person writes the black data essentially has the same function as that of the organic rainbow in the implementation mode of phase_1, and the period during which it disappears. In addition, black data can be written before normal display data, or most black data can be written in one frame.

O: \ 88 \ 88204.DOC -33- 1233071 The internal structure of the multi-display control unit 201 includes a storage control unit and a multi-display control signal generation unit. The multi-display control signal generation unit generates data line control signals 7 and scan line control signals 8 in the same manner as in the first embodiment, and generates the zero-color data in Figure 2 by referring to the current detection information 21 Scan line second control signal 202 for scan line driving time. The multiple display control signal generation unit 225 includes a basic clock pulse generation circuit, a horizontal counter, a vertical counter, a data time adjustment circuit, a data line drive control circuit, a scan line drive control circuit, a scan shift clock pulse control circuit, and a scan line second A drive control circuit and a scan second shift clock control circuit. The scan line second drive control circuit generates a scan second start signal for displaying the time of the scan second drive from the horizontal count value 110. The scanning second shift clock control circuit determines the shift amount of each scan line scanning the second start signal from the current detection information 21 to generate a second shift clock pulse with the shift amount as one cycle. The scan second start signal and the scan second shift clock pulse constitute a scan line second control signal. Fig. 12 shows the internal structure of the second scanning line control circuit 203 of the embodiment of the present invention. 230 is a scanning second start signal shift circuit, 23 1 is a second driving time signal of the first scanning line, 232 is a second driving time signal of the second scanning line, 233 is a second driving time signal of the third scanning line, and 234 is Scanning line 479 is the second driving time signal, and 235 is the second driving time signal of the 480th scanning line. The scan second start signal shift circuit 230 shifts the scan second start signal 227 according to the scan second shift clock pulse 229, and uses the shift result as the first scan line second indicating the second drive time of each scan line. The driving time signal 23 1 to the 480th scanning line is the second driving time signal 235, and 480 signals are output. 236 is O: \ 88 \ 88204.DOC -34- 1233071 The first scan line drive signal, 237 is the second scan line drive signal, 238 is the third scan line drive signal, 239 is the 479th scan line drive signal, and 240 is The 480th scanning line driving signal belongs to each scanning line signal of the scanning line driving signal. 241 is a first scan line superposition circuit, 242 is a first scan line multi-drive signal, 243 is a second scan line superposition circuit, 244 is a second scan line multi-drive signal, and 245 is a third scan line superposition circuit, 246 is the third scanning line multi-motion signal. 247 is the 479th scanning line superposition circuit, 248 is the 479th scanning line multi-drive signal, 249 is the 480th scanning line superposition circuit, and 250 is the 480th scanning line multi-driving signal. Each scan line superimposing circuit is used to superimpose each scan line drive signal and the scan line second drive signal into a signal, and output it as a multiple drive signal for each scan line. Fig. 12 is a graph showing the operating time of the scan drive signal, the scan second drive signal, and the scan line multiple drive signal. Similar to the first embodiment, in order to obtain a longer display time at the scan line closer to the upper part of the screen, the frequency of the second shift clock pulse 229 is made faster than the scan shift clock pulse 122 'to reduce the output to each The scanning line scans the second driving signal to shift the position, so that the display period of the first scanning line becomes the longest. Hereinafter, the multiple scanning control according to the second embodiment will be described with reference to FIGS. 11 to 14. In FIG. 11, 'in the multi-display control unit 201, except for the day-to-day storage operation, the data line control signal generation operation, and the scan line control signal generation operation, as shown in FIG. 12, Generates the second scanning control signal 2002 after the usual Emperor Yota & system, and the first scanning field is used to control the display signal of the data line control signal 7 as a black T scan. The Putian line second control circuit 203 generates the second scanning line driving signal.

O: \ 88 \ 88204.DOC -35- 1233071 is broken, and the superposed scanning line driving signal 17 is used to generate a scanning line multiple driving signal 204 which is executed twice in one frame. Conventionally, the display section 205 is different from the first embodiment 'in that it uses the signal voltage supplied from the data line drive signal 15 to light up the pixels on the line selected by the scan line multi-drive signal 204. However, in the second embodiment, as shown in FIG. 12, after the normal signal voltage is written, black data is always written at a time different for each scanning line, so that the pixels of each scanning line can be controlled by this. The lighting time is used to obtain the lowering effect described in the first embodiment. The operation of other parts is the same as that in the first embodiment. Next, the details of the operation of the multi-display control unit 20 will be described. The multi-display control flood signal generation unit generates the data line control signal 7 and the scan line control signal 8 'data readout instruction signal 105, and refers to the current detection information 2 1 to generate the scan line second control signal 2 02. . As shown in FIG. 12, the scan line second drive control circuit generates a scan second start signal 227, which is the basis of the normal scan second drive after writing. The scan second shift clock pulse control circuit generates a scan second shift clock pulse that shifts the scan second start signal. In FIG. 12, the scan second start signal shift circuit 230 shifts the scan second start signal 227 in accordance with the scan second shift day clock pulse 229. As shown in FIG. 12, a scan second of each scan line is generated. Drive signal. Finally, each scan line superimposing circuit uses the Fenghe scan drive signal and the scan second drive signal, as shown in FIG. 12, to generate a multiple drive signal that performs two scans in one frame. At this time, as shown in FIG. 12, the display period of each scanning line can be changed by making the frequency of the scanning second shift clock pulse 229 different from the scanning shift clock pulse 122. Therefore, when the frequency is adjusted according to the current detection information 21, the display period for compensating the voltage drop can be adjusted in the same manner as in the first embodiment. O: \ 88 \ 88204.DOC -36- 1233071, and you can also use the display data with lower brightness than the display data to replace the black data. According to the above-mentioned second embodiment of the present invention, since there are no lighting control switches 43 and lighting control lines (for example, the first lighting control lines 30 and 48) provided in each scanning line compared with the first embodiment. The lighting control line Η) can actually turn on / off the organic EL44 made in L, so it has the effect of simplifying the structure of pixels in addition to the effects of the above-mentioned embodiment. In addition, in order to use the lighting control switch 43 for purposes other than the lighting control of the organic EL44 ', it may be provided on the pixel. In addition, the present invention is applicable not only to a self-luminous element display device but also to a liquid crystal display device or a plasma display device. [Brief Description of the Drawings] FIG. 1 is a configuration diagram of a display device according to a first embodiment of the present invention. FIG. 2 is a configuration diagram of a display unit 25 according to an i-th embodiment of the present invention. FIG. 3 is an operation diagram of each scanning line of the scanning line driving signal 7 and the pixel lighting control signal 24 according to the first embodiment of the present invention. 4A-4B are conceptual diagrams for explaining the circuit control of the first embodiment of the present invention. Fig. 5 A-5D is a conceptual diagram for explaining the circuit control of the first embodiment of the present invention. 6A-6F are conceptual diagrams for explaining the circuit control of the i-th embodiment of the present invention. Fig. 7 is an internal configuration diagram of a data line driving circuit 14 according to the first embodiment of the present invention. O: \ 88 \ 88204.DOC -37-1233071 Figure 8 is the first of the present invention! Operation timing charts of the lighting start time shift circuit 123, the lighting end reference time generating circuit 129, and the lighting end time shift circuit 131 of the embodiment. Fig. 9 is a timing chart of the operation of the scanning line type lighting end time adjusting circuit 137 of the first embodiment of the present invention. FIG. 10 is a first scanning line lighting control circuit 143, a second scanning line lighting control circuit 145, a third scanning line lighting control circuit 147, and a 479th scanning line lighting control circuit according to the first embodiment of the present invention. 149. The operation time chart of the 480th scanning line lighting control circuit 1 51. FIG. 11 is a configuration diagram of a display device according to a second embodiment of the present invention. FIG. 12 is an operation diagram of each scanning line of the scanning line multiple driving signal 204 and the data line driving signal 15 according to the second embodiment of the present invention. FIG. 13 is an internal configuration diagram of a scanning line second driving circuit 203 according to the second embodiment of the present invention. FIG. 14 is a timing chart of the operation of the scanning line driving signal, the scanning line second driving signal, and the scanning line multiple driving signal according to the second embodiment of the present invention. [Illustration of Symbols in the Figures] 1 Vertical sync signal 2 Horizontal sync signal 3 Data enable signal 4 Display data 5 Synchronous clock pulse 6 Display control unit 7 Data line control signal O: \ 88 \ 88204.DOC -38- Scan line control Signal storage / reading instruction Signal storage / reading address storage data Day-to-day storage circuit Day-to-day reading data _ Data line drive circuit Data line drive signal Scan line drive circuit _ Scan line drive signal drive voltage generation circuit Drive reference voltage setting Current detection circuit Current detection information Driving voltage Pixel lighting control circuit _ Pixel lighting control signal display unit 1st data line 2nd data line 1st scanning line 480th scanning line 1st lighting control line 480th lighting control Line-39- Organic EL drive voltage supply line 1st row Organic EL drive voltage supply line 2nd row Organic EL drive voltage supply line 1st column 1st row pixel 1st column 2nd row pixel 480th column 1st row pixel ψ 480th column, 2nd row, pixel, pixel drive section, switch aaa It · write capacitor drive transistor lighting control switch

Organic EL 1st scan signal 1st scan line drive cycle 2nd scan signal 2nd scan line drive cycle 3rd scan signal 3rd scan line drive cycle 1st scan line lighting control signal 1st scan line lighting period 2nd scan Line lighting control signal 2nd scanning line lighting period 3rd scanning line lighting control signal -40- Organic EL driving voltage writing voltage source-gate voltage source-drain voltage organic EL current during 3rd scanning line lighting # Driving transistor voltage-current characteristics Organic EL voltage-current characteristics Organic EL operating point 2nd row 1st row pixel 1st row organic EL drive voltage 2nd row drive voltage 480th row drive voltage Pixel position-drive voltage characteristics low Driving transistor voltage-current characteristics at organic EL driving voltage. Organic EL voltage-current characteristics at low organic EL driving voltage. Organic EL operating point at low organic EL driving voltage. White display. Power supply inlet current. White display. 480th column pixel current. White. Pixel current in the second column during display. White position in the first column. Image current in the first column. White position. Driving voltage characteristics. Mid-tone display. Power supply inlet current. Pixel Current-480th column during intermodulation display -41-Pixel current-2nd column during midtone display-Pixel current-1st column image speed current during midtone display-Pixel voltage-drive voltage characteristics Current characteristics The top organic EL current during white display The top organic light current during white display The top organic light current during white display The effective brightness during the white display The organic EL current during white display The center organic light during white display Center point during white display Bright effective brightness Lowest organic EL current during white display Lowest organic lighting current during white display Lowest lighting during white display Lowest active brightness during midtone display Pixel position-Organic EL current characteristics Uppermost organic EL current during midtone display During the tone display, the uppermost part is lit. During the midtone display, the uppermost part is lit. Effective brightness. During the midtone display, the central organic EL current is displayed during the midtone display. Lowermost organic EL current during midtone display. Lowermost period during midtone display. Lowermost period during midtone display. Turn on the effective brightness Scan start signal -42- Scan shift clock pulse Turn on the start time shift circuit The first scan line lights up the start time signal The second scan line lights up the start time signal The third scan line lights up the start time signal 479 scan line lighting start time signal 480 scan line lighting start time signal point free end reference time generating circuit point free end reference time signal circuit lighting end time shift circuit 1 scan line lighting end reference time signal 2 Scan line lighting end reference time signal 3rd scan line point party end reference time signal 479 scan line lighting end reference time signal 480 scan line lighting end reference time signal scan line lighting end time adjustment circuit 1st scan Line lighting end time signal 2nd scanning line lighting end time signal 3rd scanning line lighting end time signal 479th scanning line lighting end time signal 480th scanning line lighting end time signal 1st scanning line lighting control circuit 1st scan line lighting control signal 2nd scan line lighting control circuit-43- 2nd scan line lighting control signal 3rd scan Line drawing control circuit 3rd scanning line lighting control signal 479th scanning line lighting control circuit 479th scanning line lighting control signal 480th scanning line lighting control circuit 480th scanning line lighting control signal display control section scanning The second control signal scan line scans the second control circuit scan line to multi-drive the signal display section. 1st multiple scan line 2nd multiple scan line 1st multiple scan signal 1st scan line display period 1st scan line black display period 2nd multiple scan signal 2nd scan line display period 2nd scan line black display period 2nd multiple scan Signal 3rd scan line display period 3rd scan line black display period 480th multiple scan signal -44- 480th scan line display period 480th scan line black display period 1st scan line write data 2nd scan line write data 3 scan line write data 480 scan line write data black write data display control signal generation section scan 2 start signal scan 2 shift clock pulse scan 2 start signal shift circuit 1 scan line 2 drive time Signal 2 scan line 2 driving time signal 3 scan line 2 driving time signal 479 scan line 2 driving time signal 480 scan line 2 driving time signal 1 scan line driving signal 2 scan line driving signal, 3rd scanning line driving 479th scanning line driving signal 480th scanning line driving signal 1st scanning line superposition circuit 1st scanning line multiple driving signal 2nd scanning Superimposed circuit-45- 1233071 244 2nd scan line multi-drive signal 245 3rd scan line superimposed circuit 246 3rd scan line multi-drive signal 247 479 scan line superimposed circuit 248 479 scan line multi-drive signal 249 480 Scan line superposition circuit 250 The 480th scan line multiple drive signal O: \ 88 \ 88204.DOC -46-

Claims (1)

1233071 The scope of patent application: 1 · A display device, which includes ·· the number of display elements' which is configured in a matrix; a driving voltage generation circuit, which generates job description 2-Dingwu Wangxun Ze Users who describe the driving voltage of the inconspicuous parts; Bei Zhuchen who uses the signal voltage for the electric current of the electric voltage; Scan line driving circuit, which is a user who selects the aforementioned display element for pre-injury driving, and a binding circuit It is used to control the lighting time of the display element according to the distance along the current path from the driving voltage generating circuit to the display element. 2. The display device according to item 1 of the scope of patent application, in which most of the display elements described in the previous month are the same when the values of the aforementioned display data are the same, and their luminous brightness is equal. 3. The display device according to item 1 of the scope of patent application, which further includes: an interrupt circuit, which is a supplier that blocks the aforementioned driving voltage to the aforementioned display element from the aforementioned control circuit. 4. For the display device under the scope of the patent application, the distance between the control circuit of the uranium control circuit P and the left t is from the distance between the driving circuit of the driving circuit to the aforementioned display element. Extender. 5. If the display device of the patent application No. 4 is used, the further detection circuit, which is used in the field, is used to double measure the current amount of the driving voltage; the control circuit is described as follows, +, s * Rishi, ', welcome the increase in the amount of driving voltage, O: \ 88 \ 88204.DOC 1233071 6. 7. 8. 9. 10. Increasing the ratio that makes the aforementioned lighting time longer, such as Item 4 of the scope of patent application. The aforementioned control circuit is a ratio that increases the length of the aforementioned lighting time with the increase of "= the increase of the hue of the material", as shown in item 4 of the scope of patent application. Detection circuit, which is used to detect the above; middle-to-step ", one-time; digital display elements of the light emitting party two control-the circuit is as the aforementioned driving voltage of the increase in light emitting brightness, said Ambassador W lighting time If the ratio is extended. For example, the display device in the scope of application for patent, where == the circuit is to broadcast the black display data into the aforementioned display data, "," "use the time point and / or time of the aforementioned black display data, Those who control lighting time. For example, the display device of the scope of application for a patent, wherein the aforementioned control circuit inserts display data having a brightness lower than the aforementioned display data into the display data, and controls the time point of inserting the aforementioned low-brightness display data and / Or time to control the aforementioned lighting time. A display device includes: a plurality of display elements, which are arranged in a matrix; a driving voltage generating circuit, which generates a driving voltage for driving the display element; a data line driving circuit, which generates control according to display data The signal voltage for the current amount of the aforementioned driving voltage; and the scanning line driving circuit, which is to select the aforementioned display element O: \ 88 \ 88204.DOC to be driven for driving. The configuration position U of the aforementioned display element, such as the display device of the scope of patent application item 1G, includes: a circuit made of ^, which controls the aforementioned lighting time according to the aforementioned configuration position 2 · such as the display of the scope of patent application item 10 Device, where most of the other display elements are in the first place, when the extraordinary luminous brightness of the leading edge display is equal, the Brahma time differs depending on the aforementioned configuration position. • For example, please use the display device of item 10 of the patent scope, among which: the display element of the digital display element, which is located on the row side: the time of the aforementioned display element on the upper side is shorter than that of the majority of the aforementioned display elements, and the aforementioned display element on the lower side By. 14. For the display device of the scope of application for patent No. 10, among the four display elements described above, the position time of the aforementioned display element whose position is +, ^ is located on the lower side of the 仃 direction is shorter than before — Among the digital display obstructions, the aforementioned display elements are located on the upper side of the row direction. 15 · As for the display device of the scope of application for patent No. 丨 0, among the above-mentioned most display elements, the position of the display point of the aforementioned display yuanniu on the left side of the column direction is shorter than the aforementioned-Yixi number Of the 70 displayed, the aforementioned display element is located on the right side of the column direction. 16. The display device according to item 10 of the scope of patent application, in which most of the aforementioned display elements are located at the right side ... > The description time of the aforementioned display element on the right side of the column direction is shorter than the above-mentioned, Among the digital display inconsistencies, the aforementioned display element is located on the left side of the column direction. O: \ 88 \ 88204.DOC