Thin film transistor liquid crystal display
By installing the upper and lower septa between the TFT array substrate and the color filter, the problem of the reduction in the display effect of the liquid crystal display under the action of external force is solved, and stable support and cost reduction are achieved.
Patent Information
- Application Number
- CN202510540245.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-07-04
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing liquid crystal displays can easily cause the TFT array substrate and color filter to deform under the action of external forces, affecting the arrangement of liquid crystal molecules and causing the display effect to decrease.
The upper and lower septa are installed between the TFT array substrate and the color filter. The raised parts are engaged and contacted to increase friction, provide stable support, slow down the deformation trend, and prevent confusion in the arrangement of liquid crystal molecules.
Effectively slow down the confusion of liquid crystal molecules, ensure the display effect of the display screen, prevent the deformation of the TFT array substrate and color filters, reduce production costs and adapt to thin and light designs.
Smart Images
Figure CN120255215A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of displays, and particularly relates to a thin film transistor liquid crystal display. Background Art
[0002] A liquid crystal display is an active matrix liquid crystal display driven by thin film transistors. It mainly uses an electric current to stimulate liquid crystal molecules to generate dots, lines, and planes, combined with a backlight tube to form an image. IPS, TFT, and SLCD all belong to subclasses of LCD. Its working principle is that under the action of an electric field, the arrangement direction of liquid crystal molecules changes, causing the light transmittance of an external light source to change (modulation), completing the electro-optical conversion, and then using different excitations of R, G, and B primary color signals to complete color reproduction in the time domain and spatial domain through red, green, and blue primary color filter films.
[0003] In the actual transportation or use process of existing liquid crystal displays, when the display screen is slapped or vibrated under the action of external force, it is easy to cause the TFT array substrate and the color filter to be deformed by the force, and then the arrangement mode and sequence of liquid crystal molecules in the liquid crystal layer change to a certain extent, directly affecting the display effect of the display screen and resulting in a decline in display quality. Summary of the Invention
[0004] In view of the problem in the prior art that when the display screen is slapped or vibrated under the action of external force, it is easy to cause the TFT array substrate and the color filter to be deformed by the force, and then the arrangement mode and sequence of liquid crystal molecules in the liquid crystal layer change to a certain extent, directly affecting the display effect of the display screen and resulting in a decline in display quality, the present invention proposes the following technical solutions:
[0005] A thin film transistor liquid crystal display, comprising: a bracket and a display screen. The display screen sequentially includes a backlight module, a lower polarizer, a TFT array substrate, a color filter, an upper polarizer, and a protective film layer from inside to outside;
[0006] A lower polarizer is disposed at the top of the backlight module, a TFT array substrate is disposed at the top of the lower polarizer, a color filter is disposed at the top of the TFT array substrate, a liquid crystal layer is disposed between the TFT array substrate and the color filter, a lower positioning hole is formed inside the TFT array substrate, multiple groups of lower spacers are installed inside the lower positioning hole, an upper positioning hole is formed inside the color filter, multiple groups of upper spacers are installed inside the upper positioning hole, an upper polarizer is disposed at the top of the color filter, and a protective film layer is adhered to the top of the upper polarizer.
[0007] Preferably, as the above technical solution, a red pixel unit is installed at the bottom end of the color filter, a green pixel unit is installed on the right side of the red pixel unit at the bottom end of the color filter, a blue pixel unit is installed on the right side of the green pixel unit at the bottom end of the color filter, and the red pixel unit, the green pixel unit, and the blue pixel unit are arranged at intervals in sequence at the bottom end of the color filter.
[0008] Preferably, as the above technical solution, multiple groups of the upper spacers are all installed between the red pixel unit, the green pixel unit, and the blue pixel unit at intervals.
[0009] Preferably, as the above technical solution, the upper spacer includes an upper fixing cylinder installed inside the color filter by threaded connection, an upper elastic washer is installed inside the upper fixing cylinder, an upper extrusion rod is slidably installed at the bottom end of the upper elastic washer inside the upper fixing cylinder, the bottom end of the upper extrusion rod is fixedly connected to an upper extrusion plate, and a plurality of upper protrusions are fixedly installed at the bottom end of the upper extrusion plate.
[0010] Preferably, as the above technical solution, the lower spacer includes a lower fixing cylinder installed inside the TFT array substrate by threaded connection, a lower elastic washer is installed inside the lower fixing cylinder, a lower extrusion rod is slidably installed at the top end of the lower elastic washer inside the lower fixing cylinder, the top end of the lower extrusion rod is fixedly connected to a lower extrusion plate, and a plurality of lower protrusions are fixedly installed at the top end of the lower extrusion plate.
[0011] Preferably, as the above technical solution, a limiting ring is fixedly sleeved on the outer side of the upper extrusion plate, and the limiting ring is sleeved on the outer ring of the lower extrusion plate.
[0012] Preferably, as the above technical solution, the plurality of upper protrusions and the plurality of lower protrusions are in meshing contact.
[0013] Preferably, as the above technical solution, cavities are formed inside the plurality of upper fixing cylinders and the plurality of lower fixing cylinders.
[0014] Preferably, as the above technical solution, a frame adhesive is bonded to the top end of the TFT array substrate, and the top end of the frame adhesive is bonded to the bottom end of the color filter.
[0015] The beneficial effects of the present invention are:
[0016] By installing upper spacers and lower spacers between the TFT array substrate and the color filter, the convex portions of the upper spacers and the lower spacers are engaged and contacted, thereby increasing the frictional force between the upper spacers and the lower spacers, making the connection between the two more stable. When the display screen is subjected to an external force, the upper spacers and the lower spacers can provide stable support between the color filter and the TFT array substrate, thereby slowing down the deformation trend generated by it, and thus slowing down the degree of disorder in the arrangement order of the liquid crystal molecules in the liquid crystal layer, ensuring the display effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 FIG. 6 shows a schematic diagram of the overall structure of the thin film transistor liquid crystal display in Embodiment 1;
[0018] Figure 2 FIG. 10 shows a schematic diagram of the structure of the display screen in Embodiment 1;
[0019] Figure 3 FIG. 14 shows a schematic diagram of the structures of the TFT array substrate and the color filter;
[0020] Figure 4 FIG. 18 shows a schematic diagram of the structures of the upper spacers and the lower spacers;
[0021] Figure 5 FIG. 22 shows a cross-sectional view of the internal structures of the upper spacers and the lower spacers;
[0022] Figure 6 FIG. 26 shows a schematic diagram of the structures of the TFT array substrate and the color filter in Embodiment 2;
[0023] Figure 7 FIG. 30 shows Figure 6 a schematic diagram of the structure of area A in
[0024] Figure 8 FIG. 36 shows a schematic diagram of the structures of the TFT array substrate and the color filter in Embodiment 3;
[0025] Figure 9 FIG. 40 shows Figure 8 a schematic diagram of the structure of area B in
[0026] In the figure: 1. Bracket; 2. Display screen; 201. Backlight module; 202. Lower polarizer; 203. TFT array substrate; 2031. Lower positioning hole; 204. Color filter; 2041. Upper positioning hole; 205. Upper polarizer; 206. Protective film layer; 301. Red pixel unit; 302. Green pixel unit; 303. Blue pixel unit; 4. Liquid crystal layer; 5. Upper spacer; 501. Upper fixing cylinder; 502. Upper elastic washer; 503. Upper extrusion rod; 504. Upper extrusion plate; 505. Upper protrusion; 506. Limit ring; 6. Lower spacer; 601. Lower fixing cylinder; 602. Lower elastic washer; 603. Lower extrusion rod; 604. Lower extrusion plate; 605. Lower protrusion; 7. Frame adhesive. Detailed implementation mode
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0028] Embodiment 1
[0029] The present invention provides a thin film transistor liquid crystal display, as Figures 1 to 5 shown, including: a bracket 1 and a display screen 2. The display screen 2 sequentially includes a backlight module 201, a lower polarizer 202, a TFT array substrate 203, a color filter 204, an upper polarizer 205, and a protective film layer 206 from inside to outside;
[0030] A lower polarizer 202 is provided at the top of the backlight module 201. A TFT array substrate 203 is provided at the top of the lower polarizer 202. A color filter 204 is provided at the top of the TFT array substrate 203. A liquid crystal layer 4 is provided between the TFT array substrate 203 and the color filter 204. A lower positioning hole 2031 is formed inside the TFT array substrate 203. A plurality of groups of lower spacers 6 are installed inside the lower positioning hole 2031. An upper positioning hole 2041 is formed inside the color filter 204. A plurality of groups of upper spacers 5 are installed inside the upper positioning hole 2041. An upper polarizer 205 is provided at the top of the color filter 204. A protective film layer 206 is bonded to the top of the upper polarizer 205.
[0031] A red pixel unit 301 is installed at the bottom of the color filter 204. A green pixel unit 302 is installed on the right side of the red pixel unit 301 at the bottom of the color filter 204. A blue pixel unit 303 is installed on the right side of the green pixel unit 302 at the bottom of the color filter 204. The numbers of the red pixel unit 301, the green pixel unit 302, and the blue pixel unit 303 are all greater than 1. The red pixel unit 301, the green pixel unit 302, and the blue pixel unit 303 are arranged at intervals in sequence at the bottom of the color filter 204.
[0032] Multiple groups of upper spacers 5 are all installed between the intervals of the red pixel units 301, green pixel units 302, and blue pixel units 303. The upper spacers 5 and the lower spacers 6 are in one-to-one corresponding bite contact and fixation. Moreover, the upper spacers 5 are installed at the gap positions of the red pixel units 301, green pixel units 302, and blue pixel units 303 to avoid blocking the effective display area on the color filter 204. The multiple groups of upper spacers 5 and lower spacers 6 cooperate with each other, and at the same time can ensure the same height between the TFT array substrate 203 and the color filter 204, can more evenly disperse the external pressure, prevent the TFT array substrate 203 and the color filter 204 from being pressed and deformed, and avoid the arrangement disorder of the liquid crystal molecules between the liquid crystal layers 4 when pressing the display screen 2, thus affecting the display effect.
[0033] As Figure 4 and Figure 5 shown, the upper spacer 5 includes an upper fixing cylinder 501 installed inside the color filter 204 through threaded connection. An upper elastic washer 502 is installed inside the upper fixing cylinder 501. An upper extrusion rod 503 is slidably installed at the bottom end of the upper elastic washer 502 inside the upper fixing cylinder 501. The bottom end of the upper extrusion rod 503 is fixedly connected to an upper extrusion plate 504. A plurality of upper protrusions 505 are fixedly installed at the bottom end of the upper extrusion plate 504. An internal cavity is formed outside the upper elastic washer 502 inside the upper fixing cylinder 501. An annular block is integrally formed at the top end of the upper extrusion rod 503, and the annular block on the upper extrusion rod 503 slides inside the cavity of the upper fixing cylinder 501 and fits its inner wall, so as to ensure that the upper extrusion rod 503 can stably slide vertically in the upper fixing cylinder 501. The lower spacer 6 includes a lower fixing cylinder 601 installed inside the TFT array substrate 203 through threaded connection. A lower elastic washer 602 is installed inside the lower fixing cylinder 601. A lower extrusion rod 603 is slidably installed at the top end of the lower elastic washer 602 inside the lower fixing cylinder 601. The top end of the lower extrusion rod 603 is fixedly connected to a lower extrusion plate 604. A plurality of lower protrusions 605 are fixedly installed at the top end of the lower extrusion plate 604. A cavity is also formed outside the lower elastic washer 602 inside the lower fixing cylinder 601. Cooperating with the annular block integrally formed at the bottom end of the lower extrusion rod 603, it is ensured that the lower extrusion rod 603 can stably slide vertically in the lower fixing cylinder 601.
[0034] As Figure 4 and Figure 5As shown, a limiting ring 506 is fixedly sleeved on the outer side of the upper pressing plate 504. The limiting ring 506 is sleeved on the outer ring of the lower pressing plate 604, so that the outer ring of the lower pressing plate 604 is tightly wrapped by the inner wall of the limiting ring 506, further reducing the deflection amplitude of the upper fixing cylinder 501 and the lower fixing cylinder 601, making the overall connection of the upper spacer 5 and the lower spacer 6 more stable. A plurality of upper protrusions 505 and a plurality of lower protrusions 605 are in meshing contact, so that the protruding parts of the upper protrusions 505 and the lower protrusions 605 are meshed with each other into the corresponding protruding gaps, so that the upper fixing cylinder 501 and the lower fixing cylinder 601 are in stable biting contact with each other, effectively increasing the friction force between the upper protrusions 505 and the lower protrusions 605, ensuring that the upper pressing plate 504 and the lower pressing plate 604 can be stably connected into one body, and thus can provide stable support between the TFT array substrate 203 and the color filter 204.
[0035] As Figure 4 and Figure 5 shown, cavities are provided inside a plurality of upper fixing cylinders 501 and a plurality of lower fixing cylinders 601. Compared with the solid design, the hollow-structured upper fixing cylinder 501 and lower fixing cylinder 601 are lighter in weight, which helps to reduce the weight of the overall display screen 2 and adapt to the use of a thinner and lighter display screen 2. At the same time, the hollow design can reduce the material consumption of the upper fixing cylinder 501 and the lower fixing cylinder 601 and reduce the production cost.
[0036] As Figures 1 to 3 shown, a frame adhesive 7 is bonded to the top end of the TFT array substrate 203, and the top end of the frame adhesive 7 is bonded to the bottom end of the color filter 204, sealing the gap between the TFT array substrate 203 and the color filter 204, thereby isolating the entry of external air and moisture, and at the same time fixing the liquid crystal layer 4 inside the area between the TFT array substrate 203 and the color filter 204, ensuring that the liquid crystal molecules will not flow out and guaranteeing the normal operation of the display screen 2 device.
[0037] Embodiment 2
[0038] As Figure 6 and Figure 7 shown, the difference between this solution and Embodiment 1 is that the upper fixing cylinder 501 in the upper spacer 5 is directly fixedly installed on the red pixel unit 301, the green pixel unit 302 and the blue pixel unit 303, and the lower spacer 6 is fixedly installed in the TFT array substrate 203 through the lower fixing cylinder 601 by threading. At the same time, the upper protrusions 505 and the lower protrusions 605 on the upper spacer 5 are meshed with each other, so that the upper fixing cylinder 501 forms a tight combination with the pixel units on the color filter 204, and the light exposed outside each pixel unit can be reflected back through the action of the upper fixing cylinder 501, avoiding the phenomenon of light leakage outside the pixel unit and improving the color deviation problem caused by light leakage outside the pixel unit.
[0039] Example 3
[0040] As Figure 8 and Figure 9 shown, the difference between this solution and that of Example 1 is that in Example 3, only the upper convex part 505 and the limiting ring 506 of the upper spacer 5 are retained, so that the upper convex part 505 is directly installed at the gap position of each pixel unit, and the lower convex part 605 on the lower spacer 6 and the upper convex part 505 are meshed and contacted with each other, which can not only effectively slow down the shaking amplitude of the lower fixing cylinder 601, but also reduce the material consumption and production cost.
[0041] Working principle: In actual use, by installing the upper spacer 5 at the gap position between every two adjacent pixel units and installing the lower spacer 6 on the TFT array substrate 203 one by one, the upper convex part 505 and the lower convex part 605 are meshed and contacted with each other, so as to effectively increase the friction force between the upper convex part 505 and the lower convex part 605, make the contact between the upper pressing plate 504 and the lower pressing plate 604 more stable, and make the whole connection of the upper spacer 5 and the lower spacer 6 be able to provide stable support for the TFT array substrate 203 and the color filter 204, so as to avoid the deformation of the TFT array substrate 203 and the color filter 204 when the display screen 2 is pressed or patted by an external force, resulting in the change and disorder of the arrangement of liquid crystal molecules in the liquid crystal layer 4, thus leading to the decline of the display effect of the display screen 2;
[0042] At the same time, when the TFT array substrate 203 and the color filter 204 generate slight deformation due to external force, the lower pressing rod 603 and the upper pressing rod 503 can move towards each other and press the lower elastic washer 602 and the upper elastic washer 502, so that the upper elastic washer 502 and the lower elastic washer 602 are compressed to generate certain deformation, and then the TFT array substrate 203 and the color filter 204 can adapt to and disperse the deformation, thus playing a buffering and protecting role for the TFT array substrate 203 and the color filter 204, and avoiding the cracking and damage of the TFT array substrate 203 and the color filter 204 caused by stress concentration.
[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.
Claims
1. A thin film transistor liquid crystal display, characterized in that, Including: A bracket (1) and a display screen (2), and the display screen (2) sequentially includes a backlight module (201), a lower polarizer (202), a TFT array substrate (203), a color filter (204), an upper polarizer (205), and a protective film layer (206) from inside to outside; A lower polarizer (202) is arranged at the top end of the backlight module (201), a TFT array substrate (203) is arranged at the top end of the lower polarizer (202), a color filter (204) is arranged at the top end of the TFT array substrate (203), a liquid crystal layer (4) is arranged between the TFT array substrate (203) and the color filter (204), a lower positioning hole (2031) is formed inside the TFT array substrate (203), multiple groups of lower spacers (6) are installed inside the lower positioning hole (2031), an upper positioning hole (2041) is formed inside the color filter (204), multiple groups of upper spacers (5) are installed inside the upper positioning hole (2041), an upper polarizer (205) is arranged at the top end of the color filter (204), and a protective film layer (206) is adhered to the top end of the upper polarizer (205).
2. The thin film transistor liquid crystal display according to claim 1, wherein A red pixel unit (301) is installed at the bottom end of the color filter (204), a green pixel unit (302) is installed on the right side of the red pixel unit (301) at the bottom end of the color filter (204), a blue pixel unit (303) is installed on the right side of the green pixel unit (302) at the bottom end of the color filter (204), and the red pixel unit (301), the green pixel unit (302), and the blue pixel unit (303) are arranged at intervals in sequence at the bottom end of the color filter (204).
3. The thin film transistor liquid crystal display according to claim 2, characterized in that, Multiple groups of the upper spacers (5) are all installed between the intervals of the red pixel unit (301), the green pixel unit (302), and the blue pixel unit (303).
4. The thin film transistor liquid crystal display according to claim 1, wherein The upper spacer (5) includes an upper fixing cylinder (501) installed inside the color filter (204) through threaded connection, an upper elastic washer (502) is installed inside the upper fixing cylinder (501), an upper extrusion rod (503) is slidably installed at the bottom end of the upper elastic washer (502) inside the upper fixing cylinder (501), the bottom end of the upper extrusion rod (503) is fixedly connected to an upper extrusion plate (504), and multiple upper protrusions (505) are fixedly installed at the bottom end of the upper extrusion plate (504).
5. The thin film transistor liquid crystal display according to claim 1, wherein The lower spacer (6) includes a lower fixing cylinder (601) installed inside the TFT array substrate (203) through threaded connection, a lower elastic washer (602) is installed inside the lower fixing cylinder (601), a lower extrusion rod (603) is slidably installed at the top end of the lower elastic washer (602) inside the lower fixing cylinder (601), the top end of the lower extrusion rod (603) is fixedly connected to a lower extrusion plate (604), and multiple lower protrusions (605) are fixedly installed at the top end of the lower extrusion plate (604).
6. The thin film transistor liquid crystal display according to claim 4, wherein, A limiting ring (506) is fixedly sleeved on the outer side of the upper pressing plate (504), and the limiting ring (506) is sleeved on the outer ring of the lower pressing plate (604).
7. The thin film transistor liquid crystal display according to claim 4, wherein Meshing contact is made between the multiple upper protrusions (505) and the multiple lower protrusions (605).
8. The thin film transistor liquid crystal display according to claim 4, characterized in that, Cavities are formed inside the multiple upper fixing cylinders (501) and the multiple lower fixing cylinders (601).
9. The thin film transistor liquid crystal display according to claim 1, characterized in that, A frame adhesive (7) is bonded to the top end of the TFT array substrate (203), and the top end of the frame adhesive (7) is bonded to the bottom end of the color filter (204).