TFT liquid crystal module and display screen

Abstract

The utility model discloses a TFT liquid crystal module and display screen, TFT liquid crystal module includes: middle layer glass substrate, is equipped with a plurality of independent and evenly distributed tiny pit unit on middle layer glass substrate, and the tiny pit unit is filled with liquid crystal, upper glass substrate and lower glass substrate, upper glass substrate, lower glass substrate is equipped respectively on the upside and downside of middle layer glass substrate, wherein, upper glass substrate and lower glass substrate cooperate and seal liquid crystal in tiny pit unit. TFT liquid crystal module of the application can cut any shape and will not leak liquid crystal and cause the influence to module function, breaks the limitation of traditional mould to the appearance size, provides more possibility for the design of liquid crystal display product.

Description

Technical Field

[0001] This utility model relates to the field of TFT LCD screen technology, and in particular to a TFT LCD module and display screen. Background Technology

[0002] TFT (Thin Film Transistor) LCD screens are liquid crystal displays driven by thin film transistors. They have advantages such as high refresh rate, true color performance, and high brightness, and are widely used in automotive central control, industrial control equipment, and other fields.

[0003] Currently, traditional TFT LCD screens employ a fully sealed design with unified wiring for the LCD module. The module structure consists of two layers of glass bonded together with a surrounding frame to form a cell. Liquid crystal and some spacer particles are added inside the cell. The module's dimensions must be completely determined during the mold-making stage. Once the mold is manufactured, the screen's shape cannot be altered or cut into other shapes. Cutting it would cause the liquid crystal inside the cell to leak completely, leading to damage to the bezel circuitry and missing lines in the display area. Therefore, this rigid limitation of traditional LCD modules results in high mold costs, long customization cycles, and poor design flexibility. Utility Model Content

[0004] This utility model provides a TFT liquid crystal module and display screen, which solves the problem of liquid crystal leakage during the cutting of traditional TFT liquid crystal modules.

[0005] In a first aspect, this utility model provides a TFT liquid crystal module, comprising: a middle glass substrate having a plurality of independent and uniformly distributed micro-pit units formed thereon, the micro-pit units being filled with liquid crystal; an upper glass substrate and a lower glass substrate, the upper glass substrate and the lower glass substrate being disposed on the upper and lower sides of the middle glass substrate, wherein the upper glass substrate and the lower glass substrate cooperate to seal the liquid crystal within the micro-pit units.

[0006] In the TFT liquid crystal module provided in this embodiment of the present invention, both the upper glass substrate and the lower glass substrate are provided with a plurality of electrode units, and at least one electrode unit is distributed above and below each of the micro-pit units.

[0007] In the TFT liquid crystal module provided in this embodiment of the present invention, data lines and scan lines are provided on both the upper glass substrate and the lower glass substrate. The data lines and the scan lines are arranged in a staggered manner, and the electrode unit is electrically connected to the data lines and the scan lines.

[0008] The TFT liquid crystal module provided in this embodiment of the present invention also includes a substrate connection layer, wherein the upper glass substrate and the lower glass substrate are connected to the upper and lower sides of the middle glass substrate through the substrate connection layer.

[0009] In the TFT liquid crystal module provided in this embodiment of the present invention, the substrate bonding layer includes an upper adhesive and a lower adhesive. The upper adhesive is bonded between the upper glass substrate and the middle glass substrate, and the lower adhesive is bonded between the lower glass substrate and the middle glass substrate.

[0010] In the TFT liquid crystal module provided in this embodiment of the present invention, the micro-pit cells are distributed in a grid pattern.

[0011] In the TFT liquid crystal module provided in this embodiment of the present invention, the micro-pit unit is a blind hole structure or a through hole structure.

[0012] In the TFT liquid crystal module provided in this embodiment of the present invention, the micro-pit unit is a circular pit, and the diameter of the circular pit is set as d, wherein 0.03mm≤d≤0.3mm.

[0013] In the TFT liquid crystal module provided in this embodiment of the present invention, the spacing between two adjacent micro-pit units is set to L, wherein 0.03mm≤L≤0.1mm.

[0014] Secondly, embodiments of the present invention provide a display screen, which includes the TFT liquid crystal module described in the first aspect above.

[0015] This utility model provides a TFT liquid crystal module and a display screen. The TFT liquid crystal module includes: a middle glass substrate with a plurality of independent and uniformly distributed micro-pit units filled with liquid crystal; an upper glass substrate and a lower glass substrate, each disposed on the upper and lower sides of the middle glass substrate. The upper and lower glass substrates cooperate to seal the liquid crystal within the micro-pit units. The TFT liquid crystal module of this application fills the liquid crystal with a plurality of independent and uniformly distributed micro-pit units on the middle glass substrate and achieves sealing through the cooperation of the upper and lower glass substrates. This allows each micro-pit unit to independently store the liquid crystal. During cutting, only the units through which the cutting line passes are affected, preventing leakage and malfunction of the entire liquid crystal module. The display screen can be cut into any shape as needed after manufacturing, breaking the limitations of traditional molds on external dimensions and providing more possibilities for the design of liquid crystal display products. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A cross-sectional view of the TFT liquid crystal module provided in an embodiment of this utility model; Figure 2 A front view of the middle glass substrate provided in an embodiment of this utility model.

[0018] The labels for the attached figures are as follows: 10. Middle glass substrate; 11. Micro-pit cell; 101. Liquid crystal; 20. Upper glass substrate; 30. Lower glass substrate; 40. Substrate bonding layer; 41. Upper adhesive layer; 42. Lower adhesive layer. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] The directional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," and "side," are merely for reference to the accompanying drawings. Therefore, the directional terms used are for explanation and understanding of this invention, and not for limiting it. Furthermore, in the accompanying drawings, structures that are similar or identical are indicated by the same reference numerals.

[0021] Reference Figure 1 and Figure 2 This invention demonstrates an embodiment of the TFT LCD 101 module and display screen provided by this utility model. The structure and working principle of the TFT LCD 101 module are described in detail below with reference to the accompanying drawings. The TFT LCD 101 module includes: a middle glass substrate 10, on which a plurality of independent and uniformly distributed micro-pit units 11 are formed, and the micro-pit units 11 are filled with liquid crystal 101; an upper glass substrate 20 and a lower glass substrate 30, the upper glass substrate 20 and the lower glass substrate 30 being respectively disposed on the upper and lower sides of the middle glass substrate 10, wherein the upper glass substrate 20 and the lower glass substrate 30 cooperate to seal the liquid crystal within the micro-pit units 11.

[0022] In practical implementation, the TFT LCD 101 module is mainly used in the display screen, and achieves display functions by working with the display screen's backlight module and other components, such as... Figure 1 and Figure 2 As shown, the TFT liquid crystal 101 module includes a middle glass substrate 10, an upper glass substrate 20, and a lower glass substrate 30. The middle glass substrate 10 has several independent and uniformly distributed micro-pit units 11. These micro-pit units 11 can be through-hole or blind-hole structures, uniformly distributed, and are on the micrometer scale. The spacing between the micro-pit units 11 is also on the micrometer scale. The micro-pit units 11 are obtained by etching the middle glass substrate 10. The specific shape of the micro-pit units 11 is not limited; they can be designed as regular or irregular shapes. Each micro-pit unit 11 is filled with liquid crystal 101, forming a dense pixel matrix. Liquid crystal 101 is a special substance between a solid and a liquid, possessing unique physical properties. Its molecules exhibit an ordered spatial arrangement, are isotropic when undisturbed, and change their molecular alignment direction when stimulated by external stimuli such as an electric field. The upper glass substrate 20 and the lower glass substrate 30 are respectively disposed on the upper and lower sides of the middle glass substrate 10. That is, the upper glass substrate 20 is disposed on the upper side of the middle glass substrate 10, and the lower glass substrate 30 is disposed on the lower side of the middle glass substrate 10. The upper and lower glass substrates serve as the basis for arranging electrodes and electrode wiring to realize the driving of the liquid crystal 101. In this design, the upper glass substrate 20 and the lower glass substrate 30 cooperate to seal the liquid crystal within the micro-pit unit 11. Specifically, if the micro-pit unit 11 is designed as a through-hole structure penetrating both sides of the middle glass substrate 10, then the upper glass substrate 20 closes the upper portion of the micro-pit unit 11, and the lower glass substrate 30 closes the lower portion of the micro-pit unit 11, thereby sealing and storing the liquid crystal 101 within the micro-pit unit 11. If the micro-pit unit 11 is designed as a blind hole structure on the upper side of the middle glass substrate 10, then the upper glass substrate 20 closes the upper portion of the micro-pit unit 11, thus sealing and storing the liquid crystal 101 within the micro-pit unit 11. If the micro-pit unit 11 is designed as a blind hole structure on the lower side of the middle glass substrate 10, then the lower glass substrate 30 closes the lower portion of the micro-pit unit 11, thus sealing and storing the liquid crystal 101 within the micro-pit unit 11. Overall, each micro-pit unit 11 acts as a pixel, achieving independent sealing for each pixel.

[0023] In practical applications, when cutting the entire LCD 101 module, the cutting line can destroy individual micro-pit units 11. Only the micro-pit units 11 through which the cutting line passes will leak liquid crystal 101, while the micro-pit units 11 not through which the cutting line passes will remain unaffected. Therefore, cutting will not affect the leakage of liquid crystal 101 in the entire LCD 101 module; only a small portion of liquid crystal 101 will leak at the location where the cutting line passes. In fact, the micro-pit units 11 through which the cutting line passes are usually also the edge part of the display screen, generally embedded in the bezel, and will not affect the display effect of the entire screen. In specific applications, the area of ​​the entire LCD 101 module can be set to be larger as needed, and then the cutting line can be drawn according to the designed shape to cut out the desired shape. Cutting will not cause the liquid crystal 101 in the entire LCD 101 module to leak, and the function of the cut LCD 101 module remains normal. This breaks the limitations of traditional molds on the shape and size, and meets the design requirements of display screens of different shapes and sizes.

[0024] Furthermore, both the upper glass substrate 20 and the lower glass substrate 30 are provided with a plurality of electrode units (not shown in the figure), and at least one electrode unit is distributed above and below each of the micro-pit units 11. In specific implementation, both the upper glass substrate 20 and the lower glass substrate 30 are provided with a plurality of electrode units. The electrode units can be obtained by processing the upper glass substrate 20 and the lower glass substrate 30 through photolithography or etching technology. The electrode units may include pixel electrodes and common electrodes. The electrode units are used to drive the liquid crystal 101 to flip, thereby causing the liquid crystal 101 molecules to exhibit different properties and controlling the light intensity to achieve image display. The positions of the electrode units correspond to those of the micro-pit units 11. At least one electrode unit is distributed above and below each micro-pit unit 11, that is, one or more electrode units are distributed above the micro-pit unit 11, and one or more electrode units are also distributed below the micro-pit unit 11. The electrode units distributed on the upper and lower sides of the micro-pit unit 11 drive and cooperate to drive the liquid crystal 101 within the micro-pit unit 11. In practical applications, when the LCD 101 module is cut, since the electrode unit and the micro-pit unit 11 are positioned correspondingly, the micro-pit unit 11 and its corresponding electrode unit will not be affected in the areas not covered by the cutting line, and the LCD 101 module will function normally after cutting.

[0025] Furthermore, both the upper glass substrate 20 and the lower glass substrate 30 are provided with data lines and scan lines (not shown in the figure). The data lines and scan lines are arranged in a staggered manner, and the electrode unit is electrically connected to the data lines and the scan lines. In a specific implementation, both the upper glass substrate 20 and the lower glass substrate 30 are provided with data lines and scan lines, and both data lines and scan lines are electrically connected to the electrode unit. The data lines and scan lines serve as the transmission paths for the electrode unit driving signals. The data lines mainly connect to the source and drain of the TFT thin-film transistors in the upper glass substrate 20 and the lower glass substrate 30, and are responsible for transmitting data signals. The timing control of the gate of the TFT thin-film transistor turns the pixels on or off. The scan lines mainly connect to the gate of the TFT thin-film transistors in the upper glass substrate 20 and the lower glass substrate 30, and are used to control the switching state of the TFT thin-film transistors. An electric field is formed by periodically energizing the TFT, causing the electrode unit to alternately form an electric field to drive the liquid crystal 101 molecules, thereby realizing dynamic image display. In terms of wiring layout, the data lines and scan lines of the upper glass substrate 20 and the lower glass substrate 30 are arranged in a staggered manner, not on the same plane, and are offset from each other. The signals go their own way and do not affect each other. When cutting, the cutting line passes through the display area, and at most only one path will be cut off, while the other path remains unobstructed, ensuring the normal operation of the driving circuit.

[0026] In one embodiment, reference is made to Figure 1 The system also includes a substrate connection layer 40, through which the upper glass substrate 20 and the lower glass substrate 30 are connected to the upper and lower sides of the middle glass substrate 10. In a specific implementation, the TFT liquid crystal 101 module further includes a substrate connection layer 40, which serves as the connection structure between the upper glass substrate 20, the lower glass substrate 30, and the middle glass substrate 10. The substrate connection layer 40 can specifically employ a surface adhesive design. The upper glass substrate 20 and the lower glass substrate 30 are connected to the upper and lower sides of the middle glass substrate 10 through the substrate connection layer 40, thereby sealing the micro-pit unit 11 and ensuring its sealing performance, allowing the liquid crystal 101 to be stored in the micro-pit unit 11 without easy leakage.

[0027] Furthermore, referring to Figure 1The substrate bonding layer 40 includes an upper adhesive 41 and a lower adhesive 42. The upper adhesive 41 connects the upper glass substrate 20 and the middle glass substrate 10, and the lower adhesive 42 connects the lower glass substrate 30 and the middle glass substrate 10. In a specific implementation, the substrate bonding layer 40 includes an upper adhesive 41 and a lower adhesive 42. The upper adhesive 41 connects the upper glass substrate 20 and the middle glass substrate 10, enhancing the sealing performance between the upper glass substrate 20 and the upper part of the micro-pit unit 11, while the lower adhesive 42 connects the lower glass substrate 30 and the middle glass substrate 10, enhancing the sealing performance between the lower glass substrate 30 and the lower part of the micro-pit unit 11.

[0028] In one embodiment, reference is made to Figure 2 The micro-pit units 11 are distributed in a grid pattern. In this embodiment, the micro-pit units 11 are distributed in a grid pattern, that is, they are evenly spaced in the horizontal and vertical directions. The micro-pit units 11 distributed in the horizontal direction are on the same straight line, and the micro-pit units 11 distributed in the vertical direction are also on the same straight line. All the micro-pit units 11 are arranged regularly and neatly, and together with the filled liquid crystal 101, they form a dense pixel matrix.

[0029] In one embodiment, the micro-pit unit 11 is a blind via structure or a through-hole structure. Specifically, the micro-pit unit 11 can be configured as a blind via structure or a through-hole structure. When the micro-pit unit 11 is configured as a blind via structure, it does not penetrate both sides of the middle glass substrate 10 and can be disposed on the upper or lower side of the middle glass substrate 10, achieving sealing solely through the upper glass substrate 20 or the lower glass substrate 30. When the micro-pit unit 11 is configured as a through-hole structure, it penetrates both the upper and lower sides of the middle glass substrate 10, achieving sealing through the combined action of the upper glass substrate 20 and the lower glass substrate 30.

[0030] In one embodiment, reference is made to Figure 2The micro-pit unit 11 is a circular pit, and the diameter of the circular pit is denoted as d, where 0.03mm ≤ d ≤ 0.3mm. In specific implementations, the micro-pit unit 11 is designed as a circular pit, meaning the circular pit fills the liquid crystal 101, thereby forming circular pixels, resulting in better image performance. During design, the diameter of the circular pit directly affects the size of the pixel; generally, smaller pixels result in a more delicate image, while larger pixels lead to a more grainy image. By rationally designing the size of the micro-pit, the display effect can be improved. Let d represent the diameter of the circular pit. In the design, 0.03mm ≤ d ≤ 0.3mm, meaning the diameter of the circular pit can be set in the range of 0.03mm to 0.3mm. For example, the diameter of the circular pit can be set to 0.1mm or 0.2mm, with a maximum of 0.3mm and a minimum of 0.03mm. By setting the diameter of the circular holes to between 0.03mm and 0.3mm, the pixel size is suitable within this range, resulting in a better display effect.

[0031] In one embodiment, reference is made to Figure 2 The spacing between two adjacent micro-pit units 11 is set as L, where 0.03mm ≤ L ≤ 0.1mm. In specific implementations, the micro-pit units 11 are arranged regularly, and the spacing between them directly affects pixel performance, thus requiring reasonable setting. Let L represent the spacing between two adjacent micro-pit units 11. In design, 0.03mm ≤ d ≤ 0.1mm is used, meaning the spacing between two adjacent micro-pit units 11 can be set in the range of 0.03mm to 0.1mm. For example, the diameter of the micro-pit unit 11 can be set to 0.05mm or 0.06mm, with a maximum of 0.1mm and a minimum of 0.03mm. By setting the diameter of the micro-pit unit 11 to 0.03mm to 0.1mm, the pixel spacing within this range is suitable, resulting in superior image display.

[0032] In summary, the TFT LCD module provided by this utility model fills the liquid crystal with several independent and uniformly distributed micro-pit units on the middle glass substrate, and achieves sealing through the cooperation of the upper and lower glass substrates. This allows each micro-pit unit to store the liquid crystal independently. During cutting, only the units through which the cutting line passes will be affected, and the liquid crystal of the entire LCD module will not leak and become inoperable. The display screen can be cut into any shape according to requirements after manufacturing, breaking the limitations of traditional molds on the external dimensions and providing more possibilities for the design of LCD display products.

[0033] This utility model also provides a display screen, which includes the TFT liquid crystal module of the above embodiments. The display screen can be any display screen, such as a vehicle central control display screen, an industrial control equipment display screen, etc. In addition to the TFT liquid crystal module, the display screen may also include a housing, a backlight module, a driving circuit, and other components. These components are installed in conjunction with the TFT liquid crystal module, and the display function is achieved through the cooperation of each component. The backlight module can provide a uniform light source, and the TFT liquid crystal module can convert the non-self-emitting linear light source provided by the backlight module into a visible image. Under the drive of the driving circuit, the liquid crystal molecules can be deflected to achieve dynamic image display. Since the specific structure and working principle of the TFT liquid crystal module have been described in detail in the preceding description, they will not be repeated here for the sake of brevity.

[0034] The display screen in this embodiment uses the aforementioned TFT liquid crystal module, which can be cut according to requirements during the design stage to create the desired shape. This breaks the limitations of traditional molds on external dimensions, resulting in lower design costs and better reliability.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A TFT liquid crystal module, characterized in that, include: A middle glass substrate, wherein a plurality of independent and uniformly distributed micro-pit units are formed on the middle glass substrate, and the micro-pit units are filled with liquid crystal; An upper glass substrate and a lower glass substrate are respectively disposed on the upper and lower sides of the middle glass substrate, wherein the upper glass substrate and the lower glass substrate cooperate to seal the liquid crystal within the micro-pit unit.

2. The TFT liquid crystal module according to claim 1, characterized in that, Both the upper glass substrate and the lower glass substrate are provided with a plurality of electrode units, and at least one electrode unit is distributed above and below each of the micro-pit units.

3. The TFT liquid crystal module according to claim 2, characterized in that, Both the upper glass substrate and the lower glass substrate are provided with data lines and scan lines. The data lines and scan lines are arranged in a staggered manner, and the electrode unit is electrically connected to the data lines and the scan lines.

4. The TFT liquid crystal module according to claim 1, characterized in that, It also includes a substrate connection layer, through which the upper glass substrate and the lower glass substrate are connected to the upper and lower sides of the middle glass substrate.

5. The TFT liquid crystal module according to claim 4, characterized in that, The substrate bonding layer includes an upper adhesive and a lower adhesive. The upper adhesive connects the upper glass substrate and the middle glass substrate, and the lower adhesive connects the lower glass substrate and the middle glass substrate.

6. The TFT liquid crystal module according to any one of claims 1-5, characterized in that, The micro-pitted units are distributed in a grid pattern.

7. The TFT liquid crystal module according to any one of claims 1-5, characterized in that, The micro-pitted unit is a blind hole structure or a through hole structure.

8. The TFT liquid crystal module according to any one of claims 1-5, characterized in that, The micro-pit unit is a circular pit, and the diameter of the circular pit is d, where 0.03mm≤d≤0.3mm.

9. The TFT liquid crystal module according to any one of claims 1-5, characterized in that, The spacing between two adjacent micro-pit units is set as L, where 0.03mm≤L≤0.1mm.

10. A display screen, characterized in that, Includes the TFT liquid crystal module as described in any one of claims 1-9.

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