Display screen structure with COF narrow frame

Abstract

The invention provides a COF narrow frame display screen structure which comprises a liquid crystal glass module and a flexible circuit board connected with the liquid crystal glass module, and a driving chip is adhered to the flexible circuit board through packaging. The flexible circuit board is borne on the glass connecting terminal, and the glass connecting terminal is vertically conducted with the liquid crystal glass module and the flexible circuit board through the anisotropic conductive adhesive. The driving chip is not placed on the liquid crystal glass connecting terminal, so that a part of area occupied by the driving chip is reduced, the size is reduced, the driving chip is thinner and lighter, meanwhile, a driving chip binding process of a module factory is reduced, and adverse effects of binding of the driving chip and the liquid crystal glass are eliminated.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of display screens, and in particular to a display screen structure with a COF narrow frame. Background Art

[0002] As a display tool that displays certain electronic files on the screen through a specific transmission device and then reflects them to the human eye, the display screen can display all kinds of information that people want on the screen through a preset program. Therefore, it is widely used in advertising signs, televisions, mobile phones, etc.

[0003] At present, the borders of consumer electronic display screens have become very narrow. Most of them have three sides of equal width, and the bottom border is still wider than the other three borders. The screen-to-body ratio is not high and the appearance is low. The borders of traditional products are too wide, making the product appearance too large and inconvenient to carry. The presence of IC at the terminal of the display will increase the width of the terminal area, which is not conducive to the realization of a narrow border structure. Summary of the invention

[0004] The present invention mainly provides a COF narrow-frame display screen structure to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the present invention to solve the above technical problems is:

[0006] The COF narrow-frame display screen structure includes a liquid crystal glass module and a flexible circuit board connected to the liquid crystal glass module, and the driver chip is adhered to the flexible circuit board through packaging;

[0007] The flexible circuit board is carried on the glass connection terminal, and the glass connection terminal is vertically connected with the liquid crystal glass module and the flexible circuit board through anisotropic conductive adhesive.

[0008] Furthermore, one end of the flexible circuit board away from the anisotropic conductive adhesive is connected to the printed circuit board, so that the driving chip and the flexible circuit board, the printed circuit board and the liquid crystal glass module are connected to form signal conduction.

[0009] Furthermore, the liquid crystal glass module includes a thin film transistor and a color filter connected to each other, an upper polarizer is attached to the upper side of the color filter, and a lower polarizer is attached to the upper side of the thin film transistor.

[0010] Furthermore, the glass connection terminal is integrally formed with the thin film transistor, and the glass connection terminal is located on one side surface of the thin film transistor and at one end of the thin film transistor close to the flexible circuit board.

[0011] Furthermore, the edge of the thin film transistor protrudes from the edge of the color filter by 1.2-1.5 mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] Compared with the existing product structure, because the driver chip is connected through a flexible printed circuit board (FPC), the driver chip and the flexible printed circuit board are an integrated assembly. Therefore, the driver chip is not placed on the liquid crystal glass connection terminal, thereby reducing the area occupied by a part of the panel, thereby reducing the size, making it thinner and lighter. At the same time, it also reduces the module factory's one driver chip binding process, eliminating the adverse effects of the driver chip binding to the liquid crystal glass.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the first embodiment of the present invention is shown in FIG. Figure 1 ;

[0016] Figure 2 The structure of the first embodiment of the present invention is shown in FIG. Figure 2 ;

[0017] Figure 3 The structure of the second embodiment of the present invention is shown in FIG. Figure 1 ;

[0018] Figure 4 The structure of the second embodiment of the present invention is shown in FIG. Figure 2 .

[0019] In the figure: 1. Thin film transistor; 2. Color filter; 3. Upper polarizer; 4. Lower polarizer; 5. Glass connecting terminal; 6. Anisotropic conductive adhesive; 7. Driver chip; 8. Flexible circuit board; 9. Printed circuit board. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Embodiment 1,

[0024] Please refer to the attached Figure 1-2 , a COF narrow-frame display screen structure, including a liquid crystal glass module and a flexible circuit board 8 connected to the liquid crystal glass module, and a driving chip 7 is adhered to the flexible circuit board 8 through packaging;

[0025] The flexible circuit board 8 is carried on the glass connection terminal 5 , and the glass connection terminal 5 is vertically connected with the liquid crystal glass module and the flexible circuit board 8 through the anisotropic conductive adhesive 6 .

[0026] Furthermore, one end of the flexible circuit board 8 away from the anisotropic conductive adhesive 6 is connected to the printed circuit board 9, so that the driving chip 7 is connected to the flexible circuit board 8, the printed circuit board 9 and the liquid crystal glass module to form signal conduction.

[0027] Furthermore, the liquid crystal glass module comprises a thin film transistor 1 and a color filter 2 connected to each other, an upper polarizer 3 is attached to the upper side of the color filter 2, and a lower polarizer 4 is attached to the upper side of the thin film transistor 1.

[0028] Furthermore, the glass connection terminal 5 is formed integrally with the thin film transistor 1 , and the glass connection terminal 5 is located on one side surface of the thin film transistor 1 and at one end of the thin film transistor 1 close to the flexible circuit board 8 .

[0029] Furthermore, the edge of the thin film transistor 1 protrudes from the edge of the color filter 2 by 1.2-1.5 mm.

[0030] Thin film transistor 1: TFT switching tube, which is made based on the principle of field effect tube, that is, TFT device is a tube that uses electric field effect to control current.

[0031] Color filter 2: The key material for LCD to achieve colorization. The principle is to coat BM, R / G / B, and O / C on the glass substrate through pigment dispersion and other processes, so that the passing white light is filtered into three basic pigment dot matrices of red, blue and green to achieve color display.

[0032] Polarizer: There are two polarizers in the liquid crystal display module, which are attached to both sides of the glass substrate. The lower polarizer 4 is used to convert the light beam generated by the backlight source into polarized light, and the upper polarizer 3 is used to analyze the polarized light after liquid crystal electrical modulation to produce light and dark contrast, thereby producing a display image. The imaging of the liquid crystal display module must rely on polarized light. Without any polarizer, the liquid crystal display module cannot display images.

[0033] Glass connection terminal 5: It is the connection terminal of the display screen, serving as the signal input terminal, and carrying the flexible printed circuit board (FPC) to connect it reliably.

[0034] Anisotropic conductive adhesive 6: used to connect two flat substrates and play the role of vertical conduction and horizontal insulation.

[0035] Driver chip 7: driver I℃ is responsible for switching the gate end of each column of transistors while outputting the source voltage to control the brightness and grayscale row by row to obtain the corresponding pixel combination to display the required image.

[0036] Flexible circuit board 8: Also known as "soft board", it is a printed circuit made of flexible insulating substrate. Flexible circuits provide excellent electrical performance, can meet the design needs of smaller and higher density installation, and also help reduce assembly processes and enhance reliability. They can be bent, rolled, and folded freely.

[0037] Printed circuit board 9: provides mechanical support for fixing and assembling components such as transistors, integrated circuits, resistors, capacitors, inductors, etc.; realizes wiring, electrical connection and electrical insulation between components such as transistors, integrated circuits, resistors, capacitors, inductors, etc. to meet their electrical characteristics; provides identification characters and graphics for the inspection and maintenance of components in the electronic assembly process, and provides solder mask graphics for wave soldering.

[0038] Printed circuit boards: provide mechanical support for fixing and assembling components such as transistors, integrated circuits, resistors, capacitors, inductors, etc.; realize wiring, electrical connection and electrical insulation between transistors, integrated circuits, resistors, capacitors, inductors, etc. to meet their electrical characteristics; provide identification characters and graphics for the inspection and maintenance of components in the electronic assembly process, and provide solder mask graphics for wave soldering.

[0039] Embodiment 2,

[0040] Embodiment 2 of the present invention provides a display screen structure, including a liquid crystal glass module and a flexible circuit board 8 connected to the liquid crystal glass module, wherein a driving chip 7 is adhered to a glass connection terminal 5 through packaging;

[0041] The flexible circuit board 8 is carried on the glass connection terminal 5 , and the glass connection terminal 5 is vertically connected with the liquid crystal glass module and the flexible circuit board 8 through the anisotropic conductive adhesive 6 .

[0042] Furthermore, one end of the flexible circuit board 8 away from the anisotropic conductive adhesive 6 is connected to the printed circuit board 9, so that the driving chip 7 is connected to the flexible circuit board 8, the printed circuit board 9 and the liquid crystal glass module to form signal conduction.

[0043] Furthermore, the liquid crystal glass module comprises a thin film transistor 1 and a color filter 2 connected to each other, an upper polarizer 3 is attached to the upper side of the color filter 2, and a lower polarizer 4 is attached to the upper side of the thin film transistor 1.

[0044] Furthermore, the glass connection terminal 5 is formed integrally with the thin film transistor 1 , and the glass connection terminal 5 is located on one side surface of the thin film transistor 1 and at one end of the thin film transistor 1 close to the flexible circuit board 8 .

[0045] Furthermore, the edge of the thin film transistor 1 protrudes from the edge of the color filter 2 by 3.2-3.5 mm.

[0046] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. COF narrow frame display screen structure, characterized in that: It comprises a liquid crystal glass module and a flexible circuit board (8) connected to the liquid crystal glass module, wherein the driving chip (7) is adhered to the flexible circuit board (8) through packaging; The flexible circuit board (8) is carried on the glass connection terminal (5), and the glass connection terminal (5) is vertically connected to the liquid crystal glass module and the flexible circuit board (8) via anisotropic conductive adhesive (6).

2. The COF narrow-frame display screen structure according to claim 1, characterized in that: One end of the flexible circuit board (8) away from the anisotropic conductive adhesive (6) is connected to the printed circuit board (9), so that the driving chip (7) and the flexible circuit board (8), the printed circuit board (9) and the liquid crystal glass module are connected to form signal conduction.

3. The COF narrow-frame display screen structure according to claim 1, characterized in that: The liquid crystal glass module comprises a thin film transistor (1) and a color filter (2) which are connected to each other, an upper polarizer (3) is attached to the upper side of the color filter (2), and a lower polarizer (4) is attached to the upper side of the thin film transistor (1).

4. The COF narrow-frame display screen structure according to claim 1, characterized in that: The glass connection terminal (5) is integrally formed with the thin film transistor (1); the glass connection terminal (5) is located on a side surface of the thin film transistor (1) and at an end of the thin film transistor (1) close to the flexible circuit board (8).

5. The COF narrow-frame display screen structure according to claim 1, characterized in that: The edge of the thin film transistor (1) protrudes from the edge of the color filter (2) by 1.2-1.5 mm.

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