Liquid crystal panel and display module
By setting up an electrostatic conductive film on the array substrate of the liquid crystal panel, the problem of insufficient antistatic ability due to the small coverage area of the color film substrate in the prior art is solved, and higher antistatic ability is achieved, which is suitable for high-demand projects.
Patent Information
- Application Number
- CN202420730442.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-09
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-09
AI Technical Summary
The color film substrate of the existing liquid crystal panel has a smaller size than the array substrate and the coverage area of the electrostatic conductive film is small, resulting in insufficient antistatic ability, especially in projects that require high antistatic ability.
The electrostatic conductive film is provided on the surface of the array substrate instead of the surface of the color film substrate, and more electrostatic conductive films are covered by increasing the area of the array substrate, thereby improving the antistatic ability.
By increasing the coverage area of the electrostatic conductive film on the array substrate, the antistatic ability of the liquid crystal panel is significantly improved, and the static electricity can be released more effectively, meeting the project requirements of high antistatic requirements.
Smart Images
Figure CN222784757U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to display technology, in particular to a liquid crystal panel and a display module. Background Art
[0002] The liquid crystal panel includes a color filter substrate and an array substrate arranged opposite to each other, and a liquid crystal material is filled between the color filter substrate and the array substrate. Since the color filter substrate is the display side of the liquid crystal panel, it often contacts with external objects such as fingers and accumulates static electricity. In the prior art, in order to solve the static electricity problem of the color filter substrate, a layer of ITO film or high resistance film is arranged on the upper surface of the color filter substrate, and then silver paste is applied between the color filter substrate and the array substrate, so that the ITO film or high resistance film on the color filter substrate is overlapped to the ground PAD of the array substrate through the silver paste, and then grounded through the external circuit of the array substrate, thereby releasing the static electricity accumulated on the color filter substrate.
[0003] However, since the color filter substrate is smaller in size than the array substrate, the area of the upper surface that can be covered by the ITO film or the high-resistance film is small, and the anti-static ability is still insufficient for some projects with high anti-static requirements. At the same time, the upper surface of the color filter substrate must also be attached to the upper polarizer, and the ITO film or the high-resistance film needs to be exposed from the periphery of the upper polarizer to contact the silver paste, and the peripheral area of the color filter substrate is small, resulting in a small contact area between the ITO film or the high-resistance film and the silver paste, which also limits the anti-static ability. Utility Model Content
[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a liquid crystal panel and a display module, which have high antistatic ability.
[0005] The technical problem to be solved by the utility model is achieved through the following technical solutions:
[0006] A liquid crystal panel comprises a color filter substrate and an array substrate which are arranged opposite to each other. A driving chip and a flexible circuit board are bound to an edge of the array substrate on a side facing the color filter substrate. The array substrate is larger than the color filter substrate and serves as the display side of the liquid crystal panel. A static conductive film is arranged on a surface of the array substrate on a side facing away from the color filter substrate.
[0007] Furthermore, the static conductive film is an ITO film or a high resistance film.
[0008] Furthermore, the liquid crystal panel also includes a conductive member, a grounded exposed copper is provided on the flexible circuit board, and the static conductive film is electrically connected to the grounded exposed copper on the flexible circuit board through the conductive member.
[0009] Furthermore, the conductive member is a conductive cloth.
[0010] Furthermore, the array substrate includes an overlap region corresponding to the color filter substrate and an epitaxial region extending outside the color filter substrate, and the epitaxial region is provided with a binding region for binding the driving chip and the flexible circuit board.
[0011] Furthermore, the liquid crystal panel also includes an upper polarizer arranged on the surface of the array substrate facing away from the color film substrate, and a lower polarizer arranged on the surface of the color film substrate facing away from the array substrate; the upper polarizer at least covers the display area of the array substrate and avoids the epitaxial area of the array substrate, so that the portion of the electrostatic conductive film located on the epitaxial area is exposed from the periphery of the upper polarizer.
[0012] A display module comprises the above-mentioned liquid crystal panel, a backlight module and a driving mainboard, wherein the liquid crystal panel is arranged on the light-emitting side of the backlight module, and the driving mainboard is arranged on the other side of the backlight module facing away from the liquid crystal panel; the color film substrate of the liquid crystal panel is arranged toward the backlight module, and the array substrate of the liquid crystal panel is arranged away from the backlight module.
[0013] Furthermore, the liquid crystal panel also includes a conductive member, a ground terminal is provided on the driving mainboard, and the static conductive film is electrically connected to the ground terminal of the driving mainboard through the conductive member.
[0014] Furthermore, a grounding exposed copper is provided on the flexible circuit board, and the static conductive film is also electrically connected to the grounding exposed copper on the flexible circuit board through the conductive member.
[0015] Furthermore, the conductive member is a conductive cloth.
[0016] The utility model has the following beneficial effects: the liquid crystal panel of the utility model uses the array substrate as the display side, and during assembly, the color film substrate serves as the light incident side, and is arranged toward the backlight module, and the array substrate serves as the display side, and is arranged away from the backlight module; since the array substrate is larger than the color film substrate, compared with the prior art in which the electrostatic conductive film is arranged on the surface of the color film substrate, the utility model arranges the electrostatic conductive film on the surface of the array substrate, which can increase the area of the electrostatic conductive film to enhance the anti-static ability. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the stacking structure of the liquid crystal panel provided by the utility model.
[0018] Figure 2 This is a schematic diagram of the front structure of another liquid crystal panel provided by the utility model.
[0019] Figure 3 This is a schematic diagram of the stacking structure of the display module provided by the utility model.
[0020] Figure 4 This is a front structural schematic diagram of a liquid crystal panel in another display module provided by the utility model. DETAILED DESCRIPTION
[0021] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0023] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0024] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] Embodiment 1
[0026] like Figure 1As shown, a liquid crystal panel includes a color filter substrate 110 and an array substrate 120 which are arranged opposite to each other, wherein a driving chip 140 and a flexible circuit board 150 are bound to an edge of the array substrate 120 on one side facing the color filter substrate 110, the array substrate 120 is larger than the color filter substrate 110 and serves as the display side of the liquid crystal panel, and a static conductive film 130 is arranged on the surface of the array substrate 120 on the side facing away from the color filter substrate 110.
[0027] The liquid crystal panel of the present invention uses the array substrate 120 as the display side. During assembly, the color film substrate 110 is used as the light incident side and is arranged toward the backlight module, and the array substrate 120 is used as the display side and is arranged away from the backlight module. Since the array substrate 120 is larger than the color film substrate 110, compared with the prior art in which the electrostatic conductive film 130 is arranged on the surface of the color film substrate 110, the present invention arranges the electrostatic conductive film 130 on the surface of the array substrate 120, which can increase the area of the electrostatic conductive film 130 to enhance the anti-static ability.
[0028] The liquid crystal panel controls light transmission based on the optical rotation of the liquid crystal material, and the user's viewing direction will not affect the light transmission of the liquid crystal panel. That is to say, no matter whether the liquid crystal panel adopts the array substrate 120 as the display side or the color film substrate 110 as the display side, it can transmit light normally for display; however, since the liquid crystal panels in the prior art all adopt the color film substrate 110 as the display side, the liquid crystal panel of the utility model, after adopting the array substrate 120 as the display side, needs to perform a left-right mirror inversion processing on the pixel addressing data during display driving, that is, the addressing data of the first column of pixels in the display screen should be mapped to the penultimate column of pixels in the liquid crystal panel, and the addressing data of the second column of pixels in the display screen should be mapped to the penultimate column of pixels in the liquid crystal panel, and so on, so as to avoid the display screen seen by the user being a mirror image of the normal screen.
[0029] In this embodiment, the electrostatic conductive film 130 is an ITO film or a high-resistance film. The ITO film is usually used in liquid crystal panels with external touch screens, such as OGS panels, GG panels, etc., and the high-resistance film is usually used in liquid crystal panels with integrated touch screens, such as In-cell panels, On-cell panels, etc.
[0030] The array substrate 120 includes an overlap region 121 corresponding to the color filter substrate 110 and an extension region 122 extending outside the color filter substrate 110 . The extension region 122 is provided with a binding region for binding the driving chip 140 and the flexible circuit board 150 .
[0031] The reason why the area of the array substrate 120 is larger than that of the color filter substrate 110 is that the array substrate 120 needs to extend outward from the color filter substrate 110 to form an epitaxial region 122 for binding the driver chip 140 and the flexible circuit board 150. The epitaxial region 122 is also used for routing connection lines between pixels and the driver chip 140 and the flexible circuit board 150.
[0032] The electrostatic conductive film 130 is arranged on the entire surface of the array substrate 120, and covers the overlapping area 121 and the extension area 122 of the array substrate 120. In the prior art, the electrostatic conductive film 130 is arranged on the surface of the color filter substrate 110, and its area is only equivalent to the overlapping area 121 of the array substrate 120.
[0033] The liquid crystal panel also includes an upper polarizer 160 arranged on the surface of the array substrate 120 facing away from the color film substrate 110, and a lower polarizer 170 arranged on the surface of the color film substrate 110 facing away from the array substrate 120; the upper polarizer 160 at least covers the display area of the array substrate 120 and avoids the extension area 122 of the array substrate 120, so that the portion of the electrostatic conductive film 130 located on the extension area 122 is exposed from the periphery of the upper polarizer 160.
[0034] Since the overlapped area 121 of the array substrate 120 includes its display area, the upper polarizer 160 can also cover the entire overlapped area 121 of the array substrate 120 .
[0035] In this embodiment, the upper polarizer 160 only covers the display area of the array substrate 120 , but considering the lamination tolerance, each side of the upper polarizer 160 extends about 0.5 mm beyond the corresponding side of the display area.
[0036] Embodiment 2
[0037] As an optimization solution of the first embodiment, in this embodiment, if Figure 2 As shown, the liquid crystal panel further includes a conductive member 180 , a grounding exposed copper 151 is provided on the flexible circuit board 150 , and the static conductive film 130 is electrically connected to the grounding exposed copper 151 on the flexible circuit board 150 through the conductive member 180 .
[0038] The liquid crystal panel of the present invention electrically connects the electrostatic conductive film 130 to the grounded exposed copper 151 on the flexible circuit board 150 through the conductive member 180. The grounded exposed copper 151 is connected to the grounding PIN pin of the flexible circuit board 150 through a grounding trace inside the flexible circuit board 150. When the flexible circuit board 150 is connected to the driving main board, the grounding PIN pin is connected to the grounding terminal of the driving main board. Finally, the static electricity conducted outward by the electrostatic conductive film 130 is grounded through the grounding circuit of the driving main board.
[0039] In this embodiment, the conductive member 180 may be, but is not limited to, a conductive cloth. The overall structure of the conductive member 180 is T-shaped, including a head 181 arranged horizontally and a body 182 arranged vertically. The head 181 of the conductive member 180 is fixedly attached to the electrostatic conductive film 130 and extends horizontally along the epitaxial region 122 of the array substrate 120, so that the area of the head 181 is equivalent to the area of the epitaxial region 122, so as to increase the contact area between the electrostatic conductive film 130 and the conductive member 180. The body 182 of the conductive member 180 is fixedly attached to the flexible circuit board 150 and covers the grounding exposed copper 151.
[0040] Embodiment 3
[0041] like Figure 3 As shown, a display module includes the liquid crystal panel 100 described in Example 1, as well as a backlight module 200 and a driving mainboard 300, wherein the liquid crystal panel 100 is arranged on the light-emitting side of the backlight module 200, and the driving mainboard 300 is arranged on the other side of the backlight module 200 facing away from the liquid crystal panel 100; the color film substrate 110 of the liquid crystal panel 100 is arranged toward the backlight module 200, and the array substrate 120 of the liquid crystal panel 100 is arranged facing away from the backlight module 200.
[0042] The display module of the present invention sets the liquid crystal panel 100 upside down, and the color filter substrate 110 of the liquid crystal panel 100 is used as the light incident side, and is set toward the backlight module 200, while the array substrate 120 of the liquid crystal panel 100 is used as the display side, and is set away from the backlight module 200; since the array substrate 120 is larger than the color filter substrate 110, compared with the prior art in which the electrostatic conductive film 130 is set on the surface of the color filter substrate 110, the present invention sets the electrostatic conductive film 130 on the surface of the array substrate 120, which can increase the area of the electrostatic conductive film 130 to enhance the anti-static ability.
[0043] Embodiment 4
[0044] As an optimization solution of the third embodiment, in this embodiment, if Figure 4As shown, the liquid crystal panel 100 also includes a conductive member 180, a grounding copper strip 151 is provided on the flexible circuit board 150, a grounding terminal is provided on the driving main board 300, and the electrostatic conductive film 130 is electrically connected to the grounding copper strip 151 on the flexible circuit board 150 and the grounding terminal of the driving main board 300 through the conductive member 180.
[0045] The liquid crystal panel 100 of the present invention electrically connects the electrostatic conductive film 130 to the grounding exposed copper 151 on the flexible circuit board 150 and the grounding terminal of the driving main board 300 through the conductive member 180. The grounding exposed copper 151 is connected to the grounding PIN pin of the flexible circuit board 150 through a grounding trace inside the flexible circuit board 150. When the flexible circuit board 150 is connected to the driving main board 300, the grounding PIN pin is connected to the grounding terminal of the driving main board 300. Finally, part of the static electricity conducted outward by the electrostatic conductive film 130 is directly transmitted to the grounding circuit of the driving main board 300 for grounding treatment, and the other part is indirectly transmitted to the grounding circuit of the driving main board 300 through the flexible circuit board 150 for grounding treatment.
[0046] In this embodiment, the conductive member 180 may be, but is not limited to, a conductive cloth. The overall structure of the conductive member 180 is π-shaped, including a head 181 arranged horizontally and a first body 182 and a second body 183 arranged vertically. The head 181 of the conductive member 180 is fixedly attached to the electrostatic conductive film 130 and extends horizontally along the extension area 122 of the array substrate 120, so that the area of the head 181 is equivalent to the area of the extension area 122, so as to increase the contact area between the electrostatic conductive film 130 and the conductive member 180. The first body 182 of the conductive member 180 is fixedly attached to the flexible circuit board 150 and covers the grounding exposed copper 151. The second body 183 of the conductive member 180 is fixedly attached to the driving mainboard 300 and covers the grounding terminal.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A liquid crystal panel, comprising a color filter substrate and an array substrate arranged opposite to each other, wherein a driving chip and a flexible circuit board are bound to an edge of the array substrate facing the color filter substrate, characterized in that: The array substrate is larger than the color filter substrate and serves as the display side of the liquid crystal panel. A static conductive film is disposed on a surface of the array substrate facing away from the color filter substrate.
2. The liquid crystal panel according to claim 1, characterized in that: The static conductive film is an ITO film or a high resistance film.
3. The liquid crystal panel according to claim 1, characterized in that: The liquid crystal panel further comprises a conductive member, a grounding exposed copper is arranged on the flexible circuit board, and the static conductive film is electrically connected to the grounding exposed copper on the flexible circuit board through the conductive member.
4. The liquid crystal panel according to claim 3, characterized in that: The conductive member is a conductive cloth.
5. The liquid crystal panel according to claim 1, characterized in that: The array substrate includes an overlap region corresponding to the color filter substrate and an epitaxial region extending outside the color filter substrate. The epitaxial region is provided with a binding region for binding the driving chip and the flexible circuit board.
6. The liquid crystal panel according to claim 5, characterized in that: The liquid crystal panel also includes an upper polarizer arranged on the surface of the array substrate facing away from the color film substrate, and a lower polarizer arranged on the surface of the color film substrate facing away from the array substrate; the upper polarizer at least covers the display area of the array substrate and avoids the epitaxial area of the array substrate, so that the portion of the electrostatic conductive film located on the epitaxial area is exposed from the periphery of the upper polarizer.
7. A display module, characterized in that: It includes the liquid crystal panel as described in claim 1, as well as a backlight module and a driving mainboard, wherein the liquid crystal panel is arranged on the light-emitting side of the backlight module, and the driving mainboard is arranged on the other side of the backlight module facing away from the liquid crystal panel; the color film substrate of the liquid crystal panel is arranged toward the backlight module, and the array substrate of the liquid crystal panel is arranged away from the backlight module.
8. The display module according to claim 7, characterized in that: The liquid crystal panel further comprises a conductive member, a ground terminal is provided on the driving mainboard, and the static conductive film is electrically connected to the ground terminal of the driving mainboard through the conductive member.
9. The display module according to claim 8, characterized in that: The flexible circuit board is provided with a grounding exposed copper, and the static conductive film is also electrically connected to the grounding exposed copper on the flexible circuit board through the conductive member.
10. The display module according to claim 8, characterized in that: The conductive member is a conductive cloth.