TWI222541B - Symmetrical LCD panel - Google Patents

Abstract

A symmetrical liquid crystal display (LCD) panel is introduced. The symmetrical LCD panel includes a substrate, at least one source driver IC positioned on a central part of a peripheral area of the substrate, a flexible printed circuit (FPC) board positioned on the same side with the source driver IC of the substrate, at least one gate IC positioned on a central part of the FPC board, and a plurality of conducting wires connected to the gate driver IC, the source driver IC, and a display area of the substrate.

Description

1222541 V. Description of the invention (1) The technical field to which the invention belongs The present invention provides a liquid crystal display panel (LCD panel), especially a symmetrical liquid crystal display panel. Prior art Due to the low quality and high quality of liquid crystal display panels, liquid crystal display panels have been widely used in notebook computers, personal digital assistants (PDAs), mobile phones, and watch information products. Please refer to FIG. 1. FIG. 1 is a schematic structural view of a conventional liquid crystal display panel. As shown in FIG. 1, the conventional liquid crystal display panel 1 Q mainly includes a glass substrate 12 2 ′ including a display area (disp 1 ayarea) 14 and a peripheral circuit area 16 provided on the surface of the glass substrate 12. At least one source driver integrated circuit (IC) 18 is provided on the peripheral circuit area 16 of the glass substrate 12 and at least one gate driver IC 20 is provided on the peripheral circuit of the glass substrate 12 The region 16 and a flexible printed circuit (FPC) board 2 2 are disposed on the edge of the peripheral circuit region 16 of the glass substrate 12. It is worth noting that the flexible printed circuit board 22 further includes a circuit (ci rcui t), such as a plurality of wires 24, for electrically connecting to the liquid crystal display.

1222541 V. Description of the invention (2) Source driver Ic 8 of the display panel 12, gate driver π 20, and electrodes on the glass substrate 12 (not shown in Figure 1). In addition, the flexible printed circuit board 22 is used as a connector (connector) to connect the liquid crystal display panel 12 and other electronic components (not shown in FIG. 1), and can be used to transmit signals to The source driver Ic 18 and the gate driver ic 2 0 ′, and then the source driver j C 丨 8 and the gate driver 丨 c 2 〇 will output the electrodes on the glass substrate 12 to control the image signal output and display 0 As far as the current manufacturing process technology is concerned, since the driver 丨 c cannot be directly manufactured on the LCD panel, the current assembly method usually compresses the driver IC on the LCD panel, such as tape carrier (tape carrier package, Tcp) and chip glass (COG) packages. Among them, Tcp refers to the packaging method that is connected to the glass substrate through a tape. Due to the large packaging volume, it is mostly used in large-size panel products. Because TCP can only encapsulate one 1C at a time, the tape and glass Si substrates must be reserved, so TCP is less flexible in circuit design. In COG, 1C uses the flip chip method to directly attach the anisotropic conductive film (anistropiaca conductive film (ACF) or silver glue) to the circuit of the glass substrate. Although C 0 G can be omitted, The cost of reeling, but if one of the ICs is handled improperly, the entire glass substrate will be scrapped. Due to the high risk, COG is mostly used on small-size panels with a small amount of 1C.

1222541 V. Description of the invention (3) In addition, the conventional source driver IC 1 8 and gate driver I c 2 0 are located on different sides of the peripheral circuit area 16 of the glass substrate 12 to control the liquid crystal display respectively. The data 1 ine and the scan line of the panel 10 are criss-crossed to control the signals of the X and Y axes of the LCD panel 10. However, it is known that such a structure of the liquid crystal display panel 10 will prevent the display area 14 of the liquid crystal display panel 10 from being located in the center of the glass substrate 12 and thus make the overall area of the liquid crystal display panel larger. The flexible printed circuit board 22 can be connected to the source driver 1C 18 and the gate driver 1C 20 at the same time. Most of the conventional structures place the flexible printed circuit board 22 at the corner of the glass substrate 12, so it will cause the LCD panel 10 to be unstable. symmetry. In addition, the above-mentioned two types of driver IC assembly methods cause the display area of the liquid crystal display panel 10 to produce an inconsistent image, making the conventional liquid crystal display panel unable to produce light, thin and short screens. Left-right symmetrical electronic information products. SUMMARY OF THE INVENTION A symmetrical liquid crystal is provided, and the screen needs to be right and left. Therefore, the main object of the present invention is a display panel, which can be used to produce electronic information products with light weight, short size, and small size. In order to achieve the above objective considerations, the symmetrical liquid crystal display contains-the display area is provided in the "relative panel of the present invention" which includes a substrate surface, and a substrate is proposed in the embodiment, and the substrate package part is Peripheral electricity

1222541 V. Description of the invention (4) The road area is provided on the surface of the substrate, and at least one source driver IC is provided on the central portion of the peripheral circuit area of the substrate. A flexible printed circuit board is provided on the peripheral circuit area of the substrate. On the edge, the flexible printed circuit board and the source driver I c are located on the same side of the substrate. The flexible printed circuit board has an extension ′ and the extension includes at least one gate driver 1C provided in the extension. On the central part, a plurality of wires are connected to the gate driver 1C, the source driver Ic, and the display area of the substrate. In the liquid crystal display panel of the present invention, a wide-polar driver I c originally provided on the edge of a glass substrate is provided on a flexible printed circuit board. Therefore, a bonding pad or input pad of an input signal of the source driver 1C or The area of the compression pad becomes larger, so it can effectively reduce the problems caused by poor COG (chip on g 1 ass). In addition, the display area of the glass substrate of the present invention can be provided in the central portion of the glass substrate, the source driver IC can also be provided in the central portion of the peripheral circuit area of the glass substrate, and the blue driver I c can be omitted. The middle part of the flexible circuit board makes the entire liquid crystal display panel a left-right symmetrical liquid crystal display panel. Embodiments Please refer to FIG. 2, which is a schematic diagram of the structure of a liquid crystal display panel 30 of the present invention. As shown in FIG. 2, the liquid crystal display panel 30 of the present invention mainly includes a glass substrate 32 including a display area 34 provided on a glass substrate.

1222541 V. Description of the invention (5) The surface of the board 3 2 and a peripheral circuit area 36 are provided on the surface of the glass substrate 3 2 outside the display area 34. A source driver I c 3 8 is provided on the periphery of the glass substrate 32 The approximately central portion of the circuit area 36 and a flexible printed circuit board 40 are disposed on the edge of the glass substrate 32, and the flexible printed circuit board 40 and the source driver 1C 38 need to be located on the same side of the glass substrate 32. In addition, the flexible printed circuit board 40 has an extension, and the extension includes at least one gate driver IC 42. The flexible printed circuit board 40 includes a plurality of wires 4. 4, used to connect the gate driver IC 4 2, the source driver IC 38, and the electrodes in the display area 34 of the glass substrate 32 (not shown in Figure 2). The flexible printed circuit board 40 is located at the approximately central portion of the peripheral circuit area edge of the glass substrate 32, and has a left-right symmetrical shape. It can be a flexible printed circuit board, a flexible copper foil substrate, or a Flexible circuit board. Among them, the source driver IC 38 can be bonded to the glass substrate 32 using the conventional COG packaging method, and the gate driver I C 4 2 can use the $ crystalline thin film (chi p 0nf 1 lm, COF). In the packaging method, the gate driver IC 4 is connected to the flexible printed circuit board 4 ′. It mainly uses an adhesive containing conductive particles, such as an anisotropic conductive film (ACF). The pole driver Ic 42 is fixed on the central part of the flexible printed circuit board 40, and the bumps (not shown in FIG. 2) on the gate driver 10, 42 and the wires on the flexible printed circuit board 40 are allowed.

1222541 V. Description of the invention (6) Please refer to FIG. 3, which is a schematic diagram of the structure in which the liquid crystal display panel 30 of FIG. 2 is applied to a cellular phone 50. As shown in FIG. 3, since the gate driver IC 4 2 of the liquid crystal display panel 30 of the present invention is provided at approximately the center portion of the flexible printed circuit board 40, the glass substrate 32 includes only the source driver IC 3 8 Therefore, the display area 34 of the glass substrate 32 can be located at the approximately central portion of the surface of the glass substrate 32, which meets the requirements for the left-right symmetry of the mobile phone screen. The liquid crystal display panel 30 can be assembled on the mobile phone 50, and one can be designed. Only light and short mobile phones that do not take up space 50. In addition, since the peripheral circuit area 36 of the liquid crystal display panel 30 of the present invention includes only the source driver IC 38, the input signal (i npu tsi gna 1) of the source driver IC 38 is bonded i ng pad) or the area of the pressure pad will become larger, so it can effectively suppress the problems caused by poor COG pressure, and also reduce the area of the peripheral circuit area 36, thereby increasing the visibility of the display area 34. Range to meet modern needs for large screens in a certain space. It is worth noting that, in the preferred embodiment of the present invention, a small-sized liquid crystal display panel is used as an example, but the technology disclosed in the present invention can also be applied to other various panels, such as amorphous silicon. si 1 icon) thin film transistor liquid crystal display (TFT-LCD) panel. In addition, the liquid crystal display panel of the present invention is not limited to being applied to mobile phones.

Page 10 1222541 Description of the invention (the so-called screen electronic information products, such as smart mobiles p h 〇n e) ′ can use the liquid crystal display panel of the present invention. In addition, ^ Minglu not only limited the gate driver 1C to flexible printed electronics ^ 'the present invention can also make the source driver 1C on the flexible printed U ^' and the intermediate electrode driver 1C on a glass substrate to Achieve = ^ I effect. In addition, the glass substrate and flexible printed circuit board of the present invention are not limited to rectangular, as long as it is a symmetrical shape, such as eight; ^ d, etc., are applicable to the present invention. ^ ^ ^ ^ ^ ^ ^ ^ ^ Simple form, put the surface problem on the substrate. The gate of the flexible printed circuit display panel of this glass substrate is only set to change, and the edge of the electro-acoustic electrical panel is the The driving power is large, due to the benefit of the invention of the circuit board in the approximate road area, the IC driving is reduced, and the approximate shape of the central part of the present invention is all one by one. The left liquid crystal display panel uses the C0? Package. The printed circuit board, so the glass IC, can make the source driver J c connected to the C 0 G package on the glass substrate. The display area of the liquid crystal display panel is located on the knife, and the source driver I c is located on the chip. Central glass base The gate driver I c is a liquid crystal display panel which is located in the central part and has a symmetrical shape between the glass substrate and the flexible print. Therefore, the liquid crystal display panel of the present invention is symmetrical to the right. ❿ Compared with the conventional liquid crystal display panel, the liquid crystal display panel of the present invention COG and COF packaging are used to assemble the source driver 丨 the gate driver IC is assembled on the glass substrate and the flexible printed circuit board, so the area of the peripheral circuit area of the glass substrate can be reduced to increase the display area

Page 111222541 V. Description of the invention (8) The product meets the requirements of left-right symmetry of the screen, and if the liquid crystal display panel of the present invention is assembled on an electronic information product, it can design electronic information that does not occupy space, is thin and short product. The above description is only a preferred embodiment of the present invention, and any equivalent changes and modifications made in accordance with the scope of the patent application of the present invention shall fall within the scope of the patent of the present invention.

Page 12 1222541 Brief description of the drawings Brief description of the drawings Figure 1 is a schematic diagram of the structure of a conventional liquid crystal display panel. FIG. 2 is a schematic structural diagram of a liquid crystal display panel of the present invention. Fig. 3 is a schematic diagram showing the structure of the liquid crystal display panel of Fig. 2 applied to a mobile phone. Description of Symbols 10 Liquid crystal display panel 12 Glass substrate 14 Display area 16 Peripheral circuit area 18 Source driver 1C 20 Gate driver 1C 2 2 Flexible printed circuit board 2 4 Conductor 3 0 Liquid crystal display panel 32 Glass substrate 34 Display area 36 Peripheral circuit area 38 Source driver 1C 40 Flexible printed circuit board 42 Gate driver 1C 44 Lead 50 Mobile phone

Page 13

Claims (1)

1222541 6. Scope of patent application 1. A symmetrical liquid crystal display panel (1 iquidcrysta 1 disp 1 ay panel, LCD panel), which includes: a substrate including a display area provided in the center of the surface of the substrate Part and a peripheral circuit area are provided on the surface of the substrate; at least one source driver integrated circuit (1 C) is provided on a central part of the peripheral circuit area of the substrate; a flexible printed circuit board (f 1 ex ib 1 e pr int ed cir cu it board (FPC) is located on the edge of the peripheral circuit area of the substrate, the flexible printed circuit board and the source driver 1C are located on the same side of the substrate, and the flexible printed circuit board An extension portion is provided, and the extension portion includes at least one gate driver I c disposed on a central portion of the extension portion; and a plurality of wires are connected to the gate driver I c, the source driver 1C, and the substrate. This display area. 2. The symmetrical liquid crystal display panel according to item i of the patent application, wherein the liquid crystal display panel is an amorphous crystalline (am〇rph〇us si 1 i con) thin film liquid crystal display (thinfi 1 mtransistor LCD, TF T-LCD) panel. 3. The symmetrical liquid crystal display panel according to item i of the patent application, wherein the substrate is an approximately rectangular glass substrate. 4. The symmetrical liquid crystal display panel according to item 1 of the patent application scope, wherein Page 14 1222541 6. Scope of patent application This symmetrical LCD panel is used in mobile phones (Cel lular phones) or smart phones (smart phones). 5. The symmetrical liquid crystal display panel according to item 1 of the patent application, wherein the flexible printed circuit board comprises a flexible printed circuit board, a flexible copper substrate or a flexible carrier board (TCP). 6. A liquid crystal display panel (liquid crystal display pane 1, LCD pane 1) 'which includes: a substrate' which includes a display area (disp 1 ayarea) and a peripheral circuit area provided on the surface of the substrate; at least one first A driver integrated circuit (int egra t ed ci rcu it, IC) is provided on the peripheral circuit area of the substrate; a flexible printed circuit board (f 1 ex ib 1 e pr in ted ci rcu it board, FPC) is provided on On the edge of the peripheral circuit area of the substrate, the flexible printed circuit board and the first driver are located on the same side of the substrate. The flexible printed circuit board has an extension, and the extension includes at least one second driver. 1 (:; and a plurality of wires are connected to the first driver IC, the second driver 1C, and the display area of the substrate. 7 · The liquid crystal display panel according to item 6 of the patent application range, wherein the liquid crystal display is not The panel system is an amorphous silicon (am〇rph〇us si 丨 ic〇n) thin film transistor Page 15 1222541 6. Scope of patent application Liquid crystal display (thin board 0 film transist〇r [CD, TFT-LCD) surface 8. As in the liquid crystal display panel of the sixth scope of the patent application, the first two-action Is IC is a source driver 'I c, and The second driver Ϊ C is a gate driver IC. L The liquid crystal display panel according to item 8 of the patent application scope, wherein the substrate is an approximately rectangular glass substrate. 10. If the liquid crystal display panel of item 9 of the patent application scope, wherein the source driver IC is provided on the center portion of the peripheral circuit area on the longer side of the substrate, the gate driver IC is provided On the central portion of the flexible printed circuit board, and the display area of the substrate is disposed on the central portion of the substrate, so that the liquid crystal display panel is a symmetrical plastic liquid crystal display panel. 11. The liquid crystal display panel according to item ίο of the patent application scope, wherein the symmetrical liquid crystal display panel is applied to a cel lular phone or a smart mobile phone (sm a r t p h ο n e). 1 2. The liquid crystal display panel according to item 6 of the patent application, wherein the flexible printed circuit board comprises a flexible printed circuit board, a flexible copper foil substrate or a flexible carrier board (TCP).