CN108803131A - Screen, screen backlight control method and device - Google Patents

Abstract

The disclosure discloses a screen, a screen backlight control method and a device, and belongs to the technical field of liquid crystal display. This includes: detecting whether the fingerprint collection unit located in the screen is in the collection working state, if the fingerprint collection unit is in the collection work state, then controlling the first backlight area to not emit backlight, and controlling at least one of the n second backlight areas The backlit area is backlit. This disclosure only needs to turn off the backlight of the area where the fingerprint collection unit is located by the display chip when collecting fingerprints, avoiding the situation that turning off the backlight of the entire LCD will cause the current LCD to fail to display information, so that the display chip can perform backlight partitioning on the backlight of the screen Control, LCD can display some information.

Description

Screen, screen backlight control method and device

technical field

The present disclosure relates to the technical field of liquid crystal display, and in particular to a method and device for controlling a screen and a screen backlight.

Background technique

A liquid crystal display is usually installed on an electronic device. The liquid crystal display includes a liquid crystal layer and a backlight layer. The liquid crystal layer is used to display information, and the backlight layer is used to provide backlight to the liquid crystal layer.

At present, fingerprint identification technology is more and more widely used in electronic devices. If the electronic device is equipped with an optical fingerprint sensor, the electronic device can collect fingerprints on the user's finger based on the principle of light refraction and reflection through the optical fingerprint sensor. .

Since the backlight of the LCD (Liquid Crystal Display, liquid crystal display) will affect the fingerprint collection performance of the optical fingerprint sensor, it is necessary to turn off the backlight of the entire LCD during fingerprint collection. However, when the electronic device turns off the backlight of the entire LCD, the current LCD cannot display information. Currently, there is no effective method for controlling the screen backlight when collecting fingerprints.

Contents of the invention

In order to solve the problem that the current LCD cannot display information due to turning off the backlight of the entire LCD when collecting fingerprints, the present disclosure provides a screen, a method and a device for controlling the screen backlight. Described technical scheme is as follows:

According to a first aspect of an embodiment of the present disclosure, a screen is provided, the screen includes: a first backlight area and n second backlight areas, the first backlight area is the area where the fingerprint collection unit is located, the first backlight area and n The backlight control of the second backlight area is independent of each other;

Each of the n second backlight areas does not overlap with the first backlight area, and the union of the n second backlight areas and the first backlight area is all the backlight areas of the screen, and n is a positive integer.

Optionally, the shape of the first backlight area is at least one of rectangle, triangle, trapezoid and semicircular arch; and/or, the shape of at least one of the n second backlight areas is rectangle, triangle , trapezoidal and semicircular arched at least one.

Optionally, the shape of the first backlight area is a rectangle, and the shape of each second backlight area in the n second backlight areas is a rectangle; all the backlight areas of the screen include M*N backlight areas, and M is the number of backlight areas in the vertical direction. The number of backlight areas, N is the number of backlight areas in the horizontal direction, M*N=n+1; the first backlight area is one of the M*N backlight areas, and the n second backlight areas are M*N backlight areas n backlight areas in the area except the first backlight area.

Optionally, the shape of the first backlight area is a triangle, and the shape of each second backlight area in the n second backlight areas is a triangle; there is at least one edge corresponding to the first backlight area in each second backlight area. At least one edge intersects at a point on the screen.

Optionally, the areas of any two of the n second backlight regions and the first backlight regions are equal, or at least two of the n second backlight regions and the first backlight regions have unequal areas.

According to a second aspect of an embodiment of the present disclosure, there is provided a screen backlight control method used in a screen including a first backlight area and n second backlight areas, the method comprising:

Detect whether the fingerprint acquisition unit located in the screen is in the acquisition working state;

If the fingerprint collection unit is in the collection working state, then control the first backlight area not to emit backlight, and control at least one second backlight area in the n second backlight areas to emit backlight;

Wherein, the first backlight area is the area where the fingerprint collection unit is located, and the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer.

Optionally, detecting whether the fingerprint collection unit located in the screen is in collection working state includes:

The light information is monitored in real time through the fingerprint collection unit, and the light information is used to indicate the light conditions at the location of the fingerprint collection unit;

Determine whether the fingerprint collection unit is in a collection working state according to the light information.

Optionally, detecting whether the fingerprint collection unit located in the screen is in collection working state includes:

Use the pressure sensor to detect whether the screen receives a pressing operation;

If the pressing operation is received, the fingerprint collection unit is triggered to start monitoring the light information, and determines whether the fingerprint collection unit is in the collection working state according to the optical fiber information, and the light information is used to indicate the light conditions at the location of the fingerprint collection unit.

According to a third aspect of an embodiment of the present disclosure, there is provided a screen backlight control device, the device comprising:

The detection module is configured to detect whether the fingerprint collection unit located in the screen is in a collection working state;

The display chip is configured to control the first backlight area not to emit backlight and control at least one second backlight area in the n second backlight areas to emit backlight if the fingerprint acquisition unit is in the acquisition working state;

Wherein, the first backlight area is the area where the fingerprint collection unit is located, and the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer.

Optionally, the detection module includes: a monitoring unit and a first determination unit;

The monitoring unit is configured to monitor light information in real time through the fingerprint collection unit, and the light information is used to indicate the light conditions at the location of the fingerprint collection unit;

The first determination unit is configured to determine whether the fingerprint collection unit is in a collection working state according to light information.

Optionally, the detection module includes: a detection unit and a second determination unit;

The detection unit is configured to detect whether the screen receives a pressing operation through the pressure sensor;

The second determination unit is configured to trigger the fingerprint collection unit to start monitoring the light information if a pressing operation is received, and determine whether the fingerprint collection unit is in the collection working state according to the optical fiber information, and the light information is used to indicate the light at the location of the fingerprint collection unit Happening.

According to a fourth aspect of an embodiment of the present disclosure, there is provided a screen backlight control device, the device comprising:

processor;

memory for storing processor-executable instructions;

where the processor is configured as:

Detect whether the fingerprint acquisition unit located in the screen is in the acquisition working state;

If the fingerprint collection unit is in the collection working state, then control the first backlight area not to emit backlight, and control at least one second backlight area in the n second backlight areas to emit backlight;

Wherein, the first backlight area is the area where the fingerprint collection unit is located, and the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

Detect whether the fingerprint collection unit located in the screen is in the collection working state through the display chip, if the fingerprint collection unit is in the collection work state, then control the first backlight area not to emit backlight, and control at least one of the n second backlight areas. The backlight area emits backlight; when the display chip collects fingerprints, it only needs to turn off the backlight of the area where the fingerprint collection unit is located, avoiding the situation that turning off the backlight of the entire LCD will cause the current LCD to fail to display information, so that the display chip can control the backlight of the screen For backlight area control, LCD can display some information.

It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic structural diagram showing an LCD panel 100 according to some exemplary embodiments;

FIG. 2 is a schematic structural diagram showing an OLED panel 200 according to some exemplary embodiments;

FIG. 3 is a schematic diagram showing a partial area of the array substrate 210 according to some exemplary embodiments;

Fig. 4 is a schematic diagram of the division method of all backlight areas of the screen provided by an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of the division method of all backlight areas of the screen provided by another embodiment of the present disclosure;

Fig. 6 is a schematic diagram of the division method of all backlight areas of the screen provided by another embodiment of the present disclosure;

Fig. 7 is a schematic diagram of the division method of all backlight areas of the screen provided by another embodiment of the present disclosure;

FIG. 8 is a flowchart of a screen backlight control method provided by an embodiment of the present disclosure;

FIG. 9A is a flowchart of a screen backlight control method provided by another embodiment of the present disclosure;

FIG. 9B is a flowchart of a screen backlight control method provided by another embodiment of the present disclosure;

Fig. 10 is a block diagram of a screen backlight control device provided by an exemplary embodiment of the present disclosure;

Fig. 11 is a block diagram of a screen backlight control device provided by another exemplary embodiment of the present disclosure;

Fig. 12 is a block diagram of a terminal provided by an exemplary embodiment of the present disclosure.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

First of all, it should be noted that the screen includes an LCD panel or an OLED (Organic Light Emitting Display, Organic Light Emitting Display) panel. Before introducing and illustrating the embodiments of the present disclosure, the LCD panel is introduced through FIG. 1 , and the OLED panel is described through FIG. 2 . introduce.

Please refer to FIG. 1 , which shows a schematic structural diagram of an LCD panel 100 .

The LCD panel 100 includes: a backlight layer 110 , a lower polarizer 120 , an array substrate 130 , a liquid crystal layer 140 , an upper substrate 150 , a color filter layer 160 , an upper polarizer 170 and a display chip.

Wherein, the lower polarizer 120 is located on the upper layer of the backlight layer 110; the array substrate 130 is located on the upper layer of the lower polarizer 120; the liquid crystal layer 140 is located on the upper layer of the array substrate 130; the upper substrate 150 is located on the upper layer of the liquid crystal layer 140; the color filter layer 160 It is located on the upper layer of the upper substrate 150 ; the upper polarizer 170 is located on the upper layer of the color filter layer 160 , and the backlight layer 110 is electrically connected to the display chip.

The backlight layer 110 is used to provide backlight for the LCD panel 100. The types of the backlight layer 110 include but are not limited to EL (Electro Luminescent, electroluminescence), CCFL (Cold Cathode Fluorescent Lamp, cold cathode fluorescent lamp), LED (Light Emitting Diode, Light-emitting diodes) and other types of any one.

The lower polarizer 120 and the upper polarizer 170 are used to transmit light in a specific direction, and the transmission axes of the lower polarizer 120 and the upper polarizer 170 are perpendicular to each other.

The array substrate 130 includes x*y pixel units, and each pixel unit includes k sub-pixel units. The value of k may be 3 or 4.

Usually, each pixel unit includes three sub-pixel units, which are R (RED, red) sub-pixel unit, G (Green, green) sub-pixel unit, and B (Blue, blue) sub-pixel unit. Optionally, each pixel unit includes 4 sub-pixel units, which are R (RED, red) sub-pixel unit, G (Green, green) sub-pixel unit, B (Blue, blue) sub-pixel unit and W (White, White) sub-pixel unit.

The liquid crystal molecules in the liquid crystal layer 140 are rotated under the control of the TFT (Thin Film Transistor, Thin Film Transistor) region 22 in the array substrate 130, and transmit different degrees of light at different rotation angles, thereby forming the display gray of each sub-pixel unit. Spend.

The color filter layer 160 is attached to the upper surface of the upper substrate 150. The color filter layer 160 enables the LCD panel 100 to present a color picture. Filter areas of different colors (red, green, blue). The filter areas correspond to the sub-sub-pixel units on the array substrate 130 one by one.

The display chip is not shown in the figure, and the display chip may be a display processor, a DDIC (DisplayDriver Integrated Circuit, display driver integrated circuit), or an MCU (MicrocontrollerUnit, micro control unit). The display chip is connected to the liquid crystal layer 140 and the backlight layer 110. On the one hand, the display chip is used to control the display of the liquid crystal layer 140. On the other hand, the display chip is used to control the backlight layer 110 to emit light or not emit light according to a certain backlight value.

Optionally, the fingerprint collection unit (not shown in the figure) is disposed on the lower layer of the LCD panel, and the light transmittance of the liquid crystal layer 140 is higher than a preset threshold. When an image needs to be displayed, the light generated by the backlight layer 110 passes through the lower polarizer 120, the light-transmitting electrode area 24 on the array substrate 130, the liquid crystal layer 140, the upper substrate 150, the color filter layer 160, the upper Polarizer 170; the voltage generated by the array substrate 130 controls the steering of liquid crystal molecules in the liquid crystal layer 140; the liquid crystal layer 140 changes the brightness of light through the steering of liquid crystal molecules, so that three different colors of R, G, and B in the color filter layer Corresponding different sub-pixel units produce different gray scales, so as to realize the display of images; when it is necessary to collect fingerprints, the display chip controls the backlight layer 110 to not emit light, and the fingerprint collection unit sends out emitted light, and then proceeds according to the received reflected light. Collection of fingerprint features.

Please refer to FIG. 2 , which shows a schematic structural diagram of an OLED panel 200 .

The OLED panel 200 includes: an array substrate 210 , an OLED layer 220 , a glass cover 230 , and a polarizer 240 .

Wherein, the OLED layer 220 is located on the upper layer of the array substrate 210 , the glass cover 230 is located on the upper layer of the OLED layer 220 , and the polarizer 240 is located on the upper layer of the substrate 230 .

The OLED layer 220 includes x*y pixel units, each pixel unit includes K sub-pixel units, and the value of K can be 3 or 4. Correspondingly, the array substrate 210 also includes x*y pixel units corresponding to the pixel units in the OLED layer 220 .

FIG. 3 exemplarily shows the arrangement of pixel units on the array substrate 210 . As shown in FIG. 3 , this area includes 4*4 pixel units, that is, 16 pixel units, and each pixel unit includes 3 sub-pixel units 30 . Each pixel unit 30 includes: a TFT area 32 and a non-TFT area 34 .

It should be noted that FIG. 3 only shows a partial area of the array substrate 210, and the array substrate 210 may be composed of multiple areas as shown in FIG. 3 . The arrangement shown in FIG. 3 is only exemplary and explanatory. , the embodiments of the present disclosure do not limit other possible arrangements.

The polarizer layer 240 is attached to the upper surface of the glass substrate 230 .

The display chip is not shown in the figure, and the display chip may be a display processor, a DDIC, or an MCU. On the one hand, the display chip is used to control the display of the OLED layer 220; on the other hand, the display chip is also used to control the OLED layer 220 to emit light or not emit light according to a certain backlight value.

Optionally, the fingerprint collection unit (not shown in the figure) is located in the OLED panel 200 and connected to the display chip in the OLED panel 20 . That is, the fingerprint collection function is integrated into the OLED panel, and only the OLED panel can be installed in the panel of the terminal to have the display function and the fingerprint collection function at the same time.

For example, the fingerprint collection unit is located on the same layer as the array substrate 210 or between the array substrate 210 and the OLED layer 220 . Taking the fingerprint collection unit located on the same layer as the array substrate 210 as an example, the fingerprint collection unit is located in a local area of the array substrate 210, and the fingerprint collection sub-units in the fingerprint collection unit correspond to the sub-pixel units in the local area one by one, wherein, a< K*m and b<n, or a<K*m and b=n, or a=K*m and b<n:

That is, each sub-pixel unit in a local area of the array substrate corresponds to a fingerprint collection sub-unit.

Optionally, when an image needs to be displayed, the array substrate 210 provides a driving electric field for the OLED layer 220, the organic semiconductor material and the luminescent material in the OLED layer 220 emit light under the drive of the electric field, and the generated light passes through the glass substrate sequentially from bottom to top 230, the polarizer 240, so as to realize the display of the image; when the fingerprint needs to be collected, the display chip controls the organic semiconductor material and the luminescent material in the OLED layer 220 not to emit light, and the fingerprint collection unit sends out the emitted light, and then according to the received reflection Light is used to collect fingerprint features.

Based on the LCD panel provided in Figure 1 or the OLED panel provided in Figure 2, the screen includes: a first backlight area and n second backlight areas, the first backlight area is the area where the fingerprint collection unit is located, the first backlight area and n The backlight control of each second backlight zone is independent of each other.

Each of the n second backlight areas does not overlap with the first backlight area, and the union of the n second backlight areas and the first backlight area is all the backlight areas of the screen, and n is a positive integer.

Optionally, the shape of the first backlight area is at least one of rectangle, triangle, trapezoid and semicircular arch; and/or, the shape of at least one of the n second backlight areas is rectangle, triangle , trapezoidal and semicircular arched at least one.

Wherein, the division manner in which the entire backlight area of the screen is divided into several backlight areas includes but is not limited to the following three possible division manners. In the following, description will be made by taking the screen including the LCD panel provided in FIG. 1 as an example. Obviously, for those skilled in the art, according to the following embodiments, the corresponding division method when the screen includes the OLED panel provided in Figure 2 can be deduced by analogy, which is easy for those skilled in the art to think about This will not be repeated here.

A first possible division manner: the shape of the first backlight area is a rectangle, and the shape of each of the n second backlight areas is a rectangle.

All the backlight areas of the screen include M*N backlight areas, M is the number of backlight areas in the vertical direction, N is the number of backlight areas in the horizontal direction, M*N=n+1.

The first backlight area is one of the M*N backlight areas, and the n second backlight areas are n backlight areas except the first backlight area among the M*N backlight areas.

Optionally, for each backlight area, a corresponding partitioned backlight module is installed on any one of the upper side, lower side, left side and right side of the screen. The partitioned backlight module corresponding to each backlight area is used to individually control the backlight brightness of the backlight area.

Optionally, the partitioned backlight module includes a control circuit and a backlight corresponding to each backlight area; schematically, the backlight is an LED (Light Emitting Diode, light emitting diode) lamp.

Optionally, the display chip is connected to the control circuit in the LCD panel, the display chip is connected to each data line in the control circuit, and the display chip is also connected to each control line in the control circuit.

For example, as shown in Figure 4, the backlight layer is divided into 2*3 backlight areas: backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15 and backlight area 16, corresponding to the backlight area 11, The backlight area 12 and the backlight area 13 are provided with a one-to-one corresponding partition backlight module on the upper side of the screen, corresponding to the backlight area 14, the backlight area 15 and the backlight area 16 are provided with a one-to-one corresponding partition backlight module on the lower side of the screen. Group. For each backlight area, its corresponding partition backlight module is used to individually control the backlight brightness of the backlight area. For example, the partitioned backlight module 21 corresponds to the backlight region 11, the partitioned backlight module 22 corresponds to the backlight region 21, the partitioned backlight module 23 corresponds to the backlight region 13, the partitioned backlight module 24 corresponds to the backlight region 14, and the partitioned backlight module 25 corresponds to the backlight region. 15 , the partitioned backlight module 26 corresponds to the backlight area 16 . The partitioned backlight module 21 is used to individually control the backlight brightness of the backlight area 11, the partitioned backlight module 22 is used to individually control the backlight brightness of the backlight area 12, and the partitioned backlight module 23 is used to individually control the backlight brightness of the backlight area 13. The module 24 is used to individually control the backlight brightness of the backlight area 14 , the partitioned backlight module 25 is used to individually control the backlight brightness of the backlight area 15 , and the partitioned backlight module 26 is used to individually control the backlight brightness of the backlight area 16 . Wherein, the first backlight area includes partition backlight area 15 (including the location of the fingerprint collection unit), and the five second backlight areas include backlight area 11, backlight area 12, backlight area 13, backlight area 14 and backlight area 16.

For another example, as shown in Figure 5, the backlight layer is divided into 3*3 backlight areas: backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15, backlight area 16, backlight area 17, backlight area 18 and backlight area 19. Corresponding to the backlight area 11, the backlight area 12 and the backlight area 13, a one-to-one corresponding partition backlight module is arranged on the upper side of the screen, and one corresponding to the backlight area 17, the backlight area 18 and the backlight area 19 is arranged on the lower side of the screen. A corresponding partitioned backlight module, corresponding to the backlight area 14 is provided on the left side of the screen, and corresponding to the backlight area 16 is provided on the right side of the screen. For example, the partitioned backlight module 21 corresponds to the backlight region 11, the partitioned backlight module 22 corresponds to the backlight region 21, the partitioned backlight module 23 corresponds to the backlight region 13, the partitioned backlight module 24 corresponds to the backlight region 14, and the partitioned backlight module 25 corresponds to the backlight region. 15. The zoned backlight module 26 corresponds to the backlight zone 16, the zoned backlight module 27 corresponds to the backlight zone 17, the zoned backlight module 28 corresponds to the backlight zone 18, and the zoned backlight module 29 corresponds to the backlight zone 19. Each partitioned backlight module is used to individually control the brightness of the backlight in the corresponding backlight area. Among them, the first backlight area includes backlight area 18 (including the location of the fingerprint collection unit), and the eight second backlight areas include backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15, backlight area 16, backlight area 17 and backlight area 19 .

In the first possible division method, taking Figure 5 as an example, since there is no partitioned backlight module corresponding to the backlight area 15 in the screen, if the area where the fingerprint collection unit is located is the backlight area 15, the display chip cannot independently The brightness of the backlight in the backlight area 15 is controlled, so that the screen backlight control method cannot be realized. Therefore, the following second possible division method can be adopted.

A second possible division manner: the shape of the first backlight area is a triangle, and the shape of each of the n second backlight areas is a triangle.

At least one side in each second backlight area intersects at least one side corresponding to the first backlight area at a point in the screen.

Optionally, at least one side in each second backlight area intersects at least one side corresponding to the first backlight area at a center point of the screen, and the center point is the center position of the screen.

As shown in Figure 6, the backlight layer is divided into 8 backlight areas with the center point as the center: backlight area 11, backlight area 12, backlight area 13, backlight area 14, backlight area 15, backlight area 16, backlight area 17 and backlight area Area 18. Corresponding to the backlight area 11 and the backlight area 12, a one-to-one corresponding partition backlight module is provided on the upper side of the screen, and a one-to-one corresponding partition backlight module is provided on the lower side of the screen corresponding to the backlight area 13 and backlight area 14, Corresponding to the backlight area 15 and the backlight area 16, a one-to-one corresponding partition backlight module is provided on the left side of the screen, and a one-to-one corresponding partition backlight module is provided on the right side of the screen corresponding to the backlight area 17 and backlight area 18. For example, the partitioned backlight module 21 corresponds to the backlight region 11, the partitioned backlight module 22 corresponds to the backlight region 21, the partitioned backlight module 23 corresponds to the backlight region 13, the partitioned backlight module 24 corresponds to the backlight region 14, and the partitioned backlight module 25 corresponds to the backlight region. 15 , the partitioned backlight module 26 corresponds to the backlight area 16 , the partitioned backlight module 27 corresponds to the backlight area 17 , and the partitioned backlight module 28 corresponds to the backlight area 18 . Each partitioned backlight module is used to individually control the brightness of the backlight in the corresponding backlight area. Among them, the first backlight area includes backlight area 14 (including the location of the fingerprint collection unit), and the seven second backlight areas include backlight area 11, backlight area 12, backlight area 13, backlight area 15, backlight area 16, backlight area 17 and Backlit area 18.

Optionally, the areas of any two of the n second backlight regions and the first backlight regions are equal, or at least two of the n second backlight regions and the first backlight regions have unequal areas.

In the second possible division method, taking Figure 6 as an example, the areas of any two backlight areas in the eight backlight areas are equal, if a part of the fingerprint collection unit is located in the backlight area 13, and the other part is located in the backlight area 14, Then an asymmetrical division method can be adopted (at least two of the n second backlight regions and the first backlight region have unequal areas), such as the third possible division method below.

A third possible division:

Optionally, as shown in Figure 7, the backlight layer is divided into seven backlight areas centered on the central point: backlight area 11, backlight area 12, backlight area 14, backlight area 15, backlight area 16, backlight area 17 and backlight area 17. Area 18. Corresponding to the backlight area 11 and the backlight area 12, there is a one-to-one corresponding partition backlight module set on the upper side of the screen, corresponding to the backlight area 14, a corresponding partition backlight module is provided on the lower side of the screen, corresponding to the backlight area 15 and The backlight area 16 is provided with a one-to-one corresponding sub-area backlight module on the left side of the screen, and one-to-one corresponding sub-area backlight module is provided on the right side of the screen corresponding to the backlight area 17 and the backlight area 18 . For example, the partitioned backlight module 21 corresponds to the backlight region 11, the partitioned backlight module 22 corresponds to the backlight region 21, the partitioned backlight module 24 corresponds to the backlight region 14, the partitioned backlight module 25 corresponds to the backlight region 15, and the partitioned backlight module 26 corresponds to the backlight region. 16 . The partitioned backlight module 27 corresponds to the backlight area 17 , and the partitioned backlight module 28 corresponds to the backlight area 18 . Each partitioned backlight module is used to individually control the brightness of the backlight in the corresponding backlight area. Wherein, the first backlight area includes backlight area 14 (including the location of the fingerprint collection unit), and the six second backlight areas include backlight area 11, backlight area 12, backlight area 15, backlight area 16, backlight area 17 and backlight area 18.

It should be noted that, in this embodiment, the manner of dividing all the backlight areas of the screen is not limited.

To sum up, this embodiment divides all the backlight areas of the screen by adopting the above-mentioned division method, that is, for each backlight area, install There are corresponding partitioned backlight modules, so that the partitioned backlight modules corresponding to each backlight region can individually control the backlight brightness of the backlight region.

Please refer to FIG. 8 , which shows a flow chart of a screen backlight control method provided by an embodiment of the present disclosure. In this embodiment, the screen backlight control method is applied to any one of the screens shown in FIG. 3 to FIG. 7 for illustration. The method includes:

Step 801, detecting whether the fingerprint collection unit located in the screen is in collection working state.

Among them, the fingerprint collection unit located in the screen includes but is not limited to the following two situations: one possible situation is that the fingerprint collection unit is on the same layer as the screen; another possible situation is that the fingerprint collection unit is located in the front view of the screen In the screen, in the actual physical structure, the fingerprint collection unit is attached to the lower layer of the screen.

Optionally, when the fingerprint collection unit and the screen are arranged on the same layer, the light transmittance of the liquid crystal layer of the screen is higher than a preset threshold.

Optionally, the display chip detects whether the fingerprint collection unit is in the collection working state, and the collection work state refers to the state that the fingerprint collection unit is collecting fingerprint features; schematically, the fingerprint collection unit is an optical fingerprint sensor, and the optical fingerprint sensor uses light The principle of refraction and reflection collects fingerprint features.

When the display chip detects that the fingerprint collection unit is in the collection working state, execute step 802; otherwise, end the process.

Step 802, if the fingerprint collection unit is in the working state of collection, control the first backlight area not to emit backlight, and control at least one of the n second backlight areas to emit backlight.

Wherein, the first backlight area is the area where the fingerprint collection unit is located, and the backlight control of the first backlight area and the n second backlight areas are independent of each other, and n is a positive integer; schematically, the first backlight area and the n second backlight areas Backlit areas are preset.

Optionally, the display chip determines the first backlight value corresponding to the first backlight area and the second backlight value corresponding to each of the n second backlight areas according to the first backlight area; and controls whether the first backlight area does not A backlight is emitted, and the second backlight region corresponding to the second backlight value is controlled to emit backlight according to the n second backlight values.

Wherein, the first backlight value is used to reflect the brightness information of the first backlight region, and the second backlight value is used to reflect the brightness information of the corresponding backlight region in the second backlight region.

Optionally, the display chip drives the backlight circuit in the first backlight region to not emit backlight according to the backlight value of the first backlight region; for example, the backlight value of the first backlight region is 0.

Optionally, the display chip drives the backlight circuit of the second backlight region corresponding to the backlight value to emit backlight according to the backlight value of at least one of the n second backlight regions; for example, the backlight of the second backlight region Values can range from 0 (not including 0) to 255 (including 255).

Based on the division method of all backlight areas of the screen provided in Fig. 7, if the fingerprint collection unit is in the collection working state, the display chip controls the backlight area 14 not to emit backlight, and controls 6 second backlight areas (comprising: backlight area 11, At least one second backlight area of the backlight area 12 , the backlight area 15 , the backlight area 16 , the backlight area 17 and the backlight area 18 ) emits backlight.

Optionally, the fingerprint collection unit is an optical fingerprint sensor; for example, the optical fingerprint collection unit can always emit light outward, that is, it is always in a working state; for another example, for the sake of saving power consumption, a predetermined condition is set, when the The optical fingerprint collection unit is triggered to emit light outwards under predetermined conditions.

Optionally, the display chip detects whether the fingerprint collection unit located in the screen is in a collection working state, including at least two different detection methods.

When the fingerprint collection unit is always in the working state, step 801 can be replaced by step 901 and step 902, as shown in Figure 9A:

Step 901, monitor light information in real time through the fingerprint collection unit.

Optionally, the light information is used to indicate the light conditions at the location of the fingerprint collection unit; schematically, the optical fiber information includes at least one of the wavelength of reflected light, incident angle, and light intensity.

Step 902, determine whether the fingerprint collection unit is in collection working state according to the light information.

Optionally, the display chip judges whether the detected light information matches the preset information, and if so, determines that the fingerprint collection unit is in the collection working state.

When the fingerprint acquisition unit needs to be triggered to enter the running working state, step 801 can be replaced by step 903, step 904 and step 905, as shown in Figure 9B:

Step 903, using the pressure sensor to detect whether the screen receives a press operation.

Optionally, the display chip detects whether the screen receives a pressing operation through a pressure sensor.

Step 904, if a pressing operation is received, trigger the fingerprint collection unit to start monitoring light information.

Step 905, determine whether the fingerprint collection unit is in collection working state according to the optical fiber information.

Wherein, the light information is used to indicate the light conditions at the location of the fingerprint collection unit.

Optionally, the display chip judges whether the detected light information matches the preset information, and if so, determines that the fingerprint collection unit is in the collection working state.

In summary, this embodiment detects whether the fingerprint collection unit located in the screen is in the collection working state through the display chip. At least one second backlight area in the backlight area emits backlight; so that the display chip only needs to turn off the backlight of the area where the fingerprint acquisition unit is located when collecting fingerprints, avoiding the situation that turning off the backlight of the entire LCD will cause the current LCD to fail to display information. In order for the display chip to control the backlight area of the screen, the LCD can display part of the information.

The following are device embodiments of the present disclosure, which can be used to implement the method embodiments of the present disclosure. For details not disclosed in the disclosed device embodiments, please refer to the disclosed method embodiments.

FIG. 10 is a block diagram of a screen backlight control device provided by an exemplary embodiment of the present disclosure, capable of implementing the screen backlight method provided by the present disclosure. The screen backlight control device includes: a detection module 1010 and a display chip 1020 .

The detection module 1010 is configured to implement the above step 801 .

The display chip 1020 is configured to implement the above step 802 .

In an optional embodiment provided based on the embodiment shown in FIG. 10 , as shown in FIG. 11 , the detection module 1010 includes: a monitoring unit 1011 and a first determining unit 1012 .

The monitoring unit 1011 is configured to implement the above step 901 .

The first determining unit 1012 is configured to implement the above step 902 .

In an optional embodiment provided based on the embodiment shown in FIG. 10 , as shown in FIG. 11 , the detection module 1010 includes: a detection unit 1013 and a second determination unit 1014 .

The detection unit 1013 is configured to implement the above step 903 .

The second determination unit 1014 is configured to implement the above steps 904 and 905 .

Relevant details may be combined with reference to the method embodiments shown in FIG. 8 , FIG. 9A and FIG. 9B . Wherein, the detection module 1010 is also used to implement any other implicit or disclosed functions related to the detection steps in the above method embodiments; the display chip 1020 is also used to implement any other implicit or disclosed functions related to the control steps in the above method embodiments related functions.

Another exemplary embodiment of the present disclosure provides a screen backlight control device capable of implementing the screen backlight control method provided in the present disclosure, the device comprising:

processor;

memory for storing processor-executable instructions;

where the processor is configured as:

Detect whether the fingerprint acquisition unit located in the screen is in the acquisition working state;

If the fingerprint collection unit is in the collection working state, then control the first backlight area not to emit backlight, and control at least one second backlight area in the n second backlight areas to emit backlight;

Wherein, the first backlight area is the area where the fingerprint collection unit is located, and the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer.

It should be noted that, when realizing the functions of the device provided by the above-mentioned embodiments, the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to the needs. The internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and the method embodiment provided by the above embodiment belong to the same idea, and the specific implementation process thereof is detailed in the method embodiment, and will not be repeated here.

Fig. 12 is a block diagram of a terminal provided by an exemplary embodiment of the present disclosure. As shown in Fig. 12, the terminal 1200 includes a liquid crystal display panel 1210, a display chip 1220, a memory 1230, a processor 1240, a power supply component 1250, and an audio component 1260, I/O interface 12120.

The liquid crystal display panel 1210 may be any LCD panel or OLED panel shown in the above embodiments.

The display chip 1220 is connected to the control circuit in the LCD panel 1210, and the display chip 1220 is connected to each data line in the control circuit, and the display chip 1220 is also connected to each control line in the control circuit, and the control circuit is connected to the LCD panel. The photosensitive device array in 1210 is connected.

The memory 1230 is configured to store various types of data to support operations at the device 1200 . Examples of such data include instructions for any application or method operating on device 1200, contact data, phonebook data, messages, pictures, videos, and the like. The memory 1200 can be implemented by any type of volatile or non-volatile memory device or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

Processor 1240 generally controls the overall operations of device 1200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processor 1240 may include one or more processors to execute instructions to complete all or part of the steps of the above method. Additionally, the processor 1240 may include one or more modules to facilitate interaction between the processor 1240 and other components.

The power supply component 1250 provides power to various components of the device 1200 . Power components 1250 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for device 1200 .

The audio component 1260 is configured to output and/or input audio signals. For example, the audio component 1260 includes a microphone (MIC) configured to receive external audio signals when the device 1200 is in operation modes, such as call mode, recording mode and voice recognition mode. The received audio signal may further be stored in memory. In some embodiments, the audio component 1260 also includes a speaker for outputting audio signals.

The I/O interface 1270 provides an interface between the processor 1240 and a peripheral interface module, which may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: a home button, volume buttons, start button, and lock button.

The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps in the screen backlight control of the above-mentioned embodiments can be completed by hardware, or can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage Among the media, the storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (10)

1. A screen, characterized in that the screen comprises: a first backlight area and n second backlight areas, the first backlight area is the area where the fingerprint collection unit is located, the first backlight area and the n second backlight areas The backlight control of the n second backlight areas is independent of each other; Each of the n second backlight regions does not intersect with the first backlight region, and the union of the n second backlight regions and the first backlight region is the screen All the backlight areas, the n is a positive integer. 2. The screen according to claim 1, characterized in that, The shape of the first backlight area is at least one of rectangle, triangle, trapezoid and semicircular arch; and / or, The shape of at least one second backlight region among the n second backlight regions is at least one of rectangle, triangle, trapezoid and semicircular arch. 3. The screen according to claim 1, wherein the shape of the first backlight area is a rectangle, and the shape of each second backlight area in the n second backlight areas is a rectangle; All the backlight areas of the screen include M*N backlight areas, the M is the number of backlight areas in the vertical direction, the N is the number of backlight areas in the horizontal direction, and the M*N=n+1; The first backlight area is one of the M*N backlight areas, and the n second backlight areas are n of the M*N backlight areas except the first backlight area backlit area. 4. The screen according to claim 1, wherein the shape of the first backlight area is a triangle, and the shape of each second backlight area in the n second backlight areas is a triangle; At least one side in each of the second backlight regions intersects at least one side corresponding to the first backlight region at a point in the screen. 5. The screen according to any one of claims 1 to 4, characterized in that, the areas of any two backlight areas in the n second backlight areas and the first backlight areas are equal, or the n number of backlight areas There are at least two backlight regions in the second backlight region and the first backlight region with unequal areas. 6. A screen backlight control method, characterized in that it is used in a screen comprising a first backlight area and n second backlight areas, the method comprising: Detecting whether the fingerprint collection unit located in the screen is in a collection working state; If the fingerprint collection unit is in the collection working state, control the first backlight area not to emit backlight, and control at least one second backlight area in the n second backlight areas to emit backlight; Wherein, the first backlight area is the area where the fingerprint collection unit is located, the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer. 7. The method according to claim 6, wherein the detecting whether the fingerprint collection unit located in the screen is in a collection working state comprises: Real-time monitoring of light information through the fingerprint collection unit, the light information is used to indicate the light conditions at the location of the fingerprint collection unit; Determine whether the fingerprint collection unit is in a collection working state according to the light information. 8. The method according to claim 6, wherein the detecting whether the fingerprint collection unit located in the screen is in a collection working state comprises: Detecting whether the screen receives a pressing operation through a pressure sensor; If a press operation is received, trigger the fingerprint collection unit to start monitoring light information, and determine whether the fingerprint collection unit is in a collection working state according to the optical fiber information, and the light information is used to indicate the location of the fingerprint collection unit light conditions. 9. A screen backlight control device, characterized in that the device comprises: A detection module configured to detect whether the fingerprint collection unit located in the screen is in a collection working state; A display chip, configured to control the first backlight area not to emit backlight if the fingerprint collection unit is in the collection working state, and control at least one second backlight area in the n second backlight areas to emit backlight; Wherein, the first backlight area is the area where the fingerprint collection unit is located, the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer. 10. A screen backlight control device, characterized in that the device comprises: processor; memory for storing said processor-executable instructions; Wherein, the processor is configured as: Detecting whether the fingerprint collection unit located in the screen is in a collection working state; If the fingerprint collection unit is in the collection working state, control the first backlight area not to emit backlight, and control at least one second backlight area in the n second backlight areas to emit backlight; Wherein, the first backlight area is the area where the fingerprint collection unit is located, the backlight controls of the first backlight area and the n second backlight areas are independent from each other, and n is a positive integer.