VA segment code screen LCD of In cell

Abstract

According to the utility model, the In cell structure and the short substrate are additionally arranged to combine the ITO pattern and the SEG line for realizing the touch control function together, and the COM wiring is arranged on the long substrate, so that the display layer and the induction layer of the segment code screen are integrated, the structure is simple, and on the basis of the traditional LCD structure, the wiring is added when the circuit is designed, the substrate and the process manufacturing are not changed, and the production cost is reduced. Touch control and adjustment of the LCD can be achieved without externally hanging a touch screen or physical keys on the LCD of a traditional VA segment code screen, and the whole touch screen is light, thin and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of VA segment code screen LCD, in particular to an In cell VA segment code screen LCD. Background Art

[0002] Traditional VA segment screen products do not have touch functions, and usually need to control LCD functions through external physical buttons. External physical buttons or knobs are not beautiful and take up a certain amount of space. Commonly used LCD modules with touch functions require a touch screen to be mounted on the LCD, which has high module costs, complex processes, and no unit price advantage. With the advancement of technology and the improvement of aesthetics, people's pursuit of LCD electronic products is more convenient and intelligent. At the same time, in the increasingly competitive market environment, price guidance is becoming more and more obvious. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a VA segment code screen LCD, in which the ITO pattern and wiring for realizing the touch function are made in the LCD box and designed together with the SEG line to reduce the cost.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] An In Cell VA segment code screen LCD comprises a first polarizer, a short substrate, a liquid crystal module, a long substrate and a second polarizer, wherein the liquid crystal module is arranged in a sealing frame between the short substrate and the long substrate, the first polarizer is attached to a side of the short substrate away from the liquid crystal module, the second polarizer is attached to a side of the long substrate away from the liquid crystal module, a COM trace is arranged on a first ITO layer covering a surface of the long substrate close to the liquid crystal module, an ITO pattern and a SEG trace are arranged on a second ITO layer covering a surface of the short substrate, the ITO pattern and the SEG trace are electrically connected, and the COM trace and the SEG trace are electrically connected.

[0006] Preferably, the long substrate and the short substrate are ITO glass substrates.

[0007] Furthermore, the ITO pattern is made by evaporation and acid etching processes.

[0008] Furthermore, there is at least one ITO pattern, and the single ITO pattern corresponds to one or more touch function areas provided on a side of the short substrate facing away from the liquid crystal module.

[0009] Furthermore, the SEG wiring is made of indium tin oxide.

[0010] Furthermore, the SEG routing is designed in partitions, and the SEG routing in each area is relatively independent and does not overlap with the ITO pattern.

[0011] Furthermore, the COM wiring is connected to an external device or a power source by welding, plugging or crimping.

[0012] Furthermore, a driving IC is attached to a surface of the long substrate extending out of the short substrate close to the liquid crystal module, and ends of the SEG wiring and the COM wiring are welded to pins or welding pads of the driving IC.

[0013] Furthermore, the shape and size of the first ITO layer are consistent with those of the sealing frame, and the shape and size of the second ITO layer are consistent with those of the short substrate.

[0014] Furthermore, a color filter is provided between the short substrate and the second ITO layer.

[0015] The utility model adds an In cell structure, designs the ITO pattern and SEG line for realizing the touch function together on the short substrate, arranges the COM wiring on the long substrate and connects with the external driver, thereby integrating the display layer and the sensing layer of the segment code screen. The utility model has a simple structure, and only adds wiring when designing the circuit on the basis of the traditional LCD structure, and the substrate and the manufacturing process remain unchanged. However, the touch and adjustment of the LCD can be realized without the need for an LCD external touch screen or physical buttons like the traditional VA segment code screen, and the entire touch screen is light and thin with low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural diagram of an In cell VA segment code screen LCD embodiment 1.

[0018] Figure 2 This is a structural diagram of the second embodiment of the VA segment code screen LCD of In cell. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0020] It should be noted that the terms "far away from", "close to", "one side" and similar expressions used in the present utility model are only for the purpose of explanation and do not represent the only implementation mode. In the present utility model, unless otherwise clearly stipulated and limited, the terms "connection", "correspondence" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. The terms used in the specification of the present utility model are only for the purpose of describing specific implementation modes and are not intended to limit the present utility model.

[0021] In one embodiment of the In Cell VA segment code screen LCD of the present invention, it includes a first polarizer 1, a short substrate 2, a liquid crystal module 3, a long substrate 4 and a second polarizer 5. The liquid crystal module 3 is arranged in a sealing frame between the short substrate 2 and the long substrate 4. The first polarizer 1 is attached to a side of the short substrate 2 away from the liquid crystal module 3, and the second polarizer 5 is attached to a side of the long substrate 4 away from the liquid crystal module 3. A COM trace 411 is provided on a first ITO layer 41 covered on a surface of the long substrate 4 close to the liquid crystal module 3, and an ITO pattern 211 and a SEG trace 212 are provided on a second ITO layer 21 covered on a surface of the short substrate 2. The ITO pattern 211 and the SEG trace 212 are electrically connected, and the COM trace 411 and the SEG trace 212 are electrically connected.

[0022] In this way, the connection between the ITO pattern 211 on the short substrate and the SEG trace 212 constitutes a key part of the display or touch function circuit, which is arranged in the sensing layer of the VA segment code screen LCD. In this way, in LCD applications, each pixel or pixel group is formed by the ITO pattern 211 and is connected to the control circuit through the SEG trace 212. When the user touches the screen, the position of the touch point will cause the capacitance of the ITO pattern 211 to change. This change is transmitted to the processing unit through the SEG trace 212. The processing unit can determine the position of the touch point by analyzing these signals, thereby realizing the detection and positioning of touch input.

[0023] The connection between the SEG wiring 212 and the COM wiring 411 on the long substrate 4 can realize the precise control of each pixel on the LCD display screen, so as to display the required characters, graphics or images. When a voltage is applied between SEG and COM, the electric field causes the liquid crystal molecules to deflect, allowing the backlight to pass through, forming bright pixels. By precisely controlling the voltage signals on SEG and COM, the precise control of the arrangement of liquid crystal molecules can be achieved, thereby presenting a high-quality image, and the arrangement of the COM wiring 411 on the long substrate 4 can effectively reduce electromagnetic interference (EMI) and noise, and reduce the attenuation and distortion during signal transmission.

[0024] See also Figure 1 In the first embodiment of the above implementation, an ITO pattern 211 and a SEG trace 212 are added to the second ITO layer 21 on the short substrate 2, and a COM trace 411 is provided on the first ITO layer 41 on the long substrate 4, so as to replace the external physical buttons or touch screens to realize the touch and control functions of the LCD and reduce the manufacturing cost.

[0025] In this embodiment, the long substrate 4 and the short substrate 2 are ITO glass substrates, and the short substrate 2 is on the top and the long substrate 4 is on the bottom. The long substrate 4 with the COM wiring 411 arranged on the bottom is easy to maintain the structural stability of the LCD, and the heat dissipation material or heat dissipation structure at the bottom of the LCD box can be used for heat dissipation, thereby reducing the operating temperature, extending the life, and reducing the manufacturing and maintenance costs.

[0026] See also Figure 2 In the second embodiment of the above implementation mode, the long substrate 4 and the short substrate 2 are also ITO glass substrates, and the long substrate 4 is on the top and the short substrate 2 is on the bottom. The long substrate 4 for laying the COM wiring 411 is on the top, which makes the wiring simpler and reduces the intersection with other wirings, thereby reducing the complexity of circuit design and further reducing the production cost. If the COM wiring 411 fails, placing it on the top may be more convenient for repair or replacement, reducing maintenance costs. In addition, the long substrate 4 in the upper position can keep the COM wiring 411 away from certain potential interference sources, reduce the interference of electrical noise, and improve the stability of the signal.

[0027] In the above two embodiments, the ITO pattern 211 is made by evaporation and acid etching processes.

[0028] In the above two embodiments, the short substrate 2 is provided with at least one ITO pattern 211, and a single ITO pattern 211 corresponds to one or more touch function areas provided on the side of the short substrate 2 away from the liquid crystal module 3. When a user touches a certain functional area of ​​the screen, the position of the touch point will cause the capacitance of the corresponding ITO pattern 211 to change, and this change can form a signal to be transmitted to the processing unit through the SEG wiring 212, thereby realizing the touch control and regulation of the LCD.

[0029] In the above two embodiments, the SEG trace 212 is made of indium tin oxide.

[0030] In the above two embodiments, the SEG wiring 212 is designed in a partitioned manner, and the SEG wiring 212 in each area is relatively independent and does not overlap with the ITO pattern 211. In this way, the mutual interference and confusion between the SEG wiring 212 or between the SEG wiring 212 and the ITO pattern 211 can be reduced, the signal quality and power distribution can be optimized, the overall performance of the system can be improved, the difficulty of troubleshooting and repairing can be reduced, and the reliability of the system can be improved.

[0031] In the above two embodiments, the COM line 411 is connected to an external device or a power source by welding, plugging or crimping.

[0032] In the above two embodiments, the surface of the long substrate 4 extending out of the short substrate 2 close to the liquid crystal module 3 is attached with the driver IC 6 , and the ends of the SEG trace 212 and the COM trace 411 are welded to the pins or welding pads of the driver IC 6 .

[0033] It is understandable that the number of pen tips that can be controlled by a driver IC6 is limited. When it is necessary to display rich information patterns, more driver IC6 can be set to control more SEG traces 212 and COM traces 411.

[0034] In the above two embodiments, the shape and size of the first ITO layer 41 are consistent with the sealing rubber frame, and the shape and size of the second ITO layer 41 are consistent with the short substrate 2. The shape and size of the first ITO layer 41 of the long glass are consistent with the rubber frame, which can ensure that the long glass 4 can be accurately placed in the rubber frame during the assembly process, avoiding position deviation or misalignment. Similarly, the shape and size of the second ITO layer 21 is consistent with the short substrate 2, which also ensures the accuracy of the short glass 2 during assembly. This precise assembly helps to improve the stability and reliability of the overall structure. In other words, when the shape and size of the ITO layers 41 and 21 are consistent with their corresponding glass or rubber frame, the positioning and alignment steps in the manufacturing process can be more simplified and accurate. This helps to reduce manufacturing costs and improve production efficiency.

[0035] In the above two embodiments, a color filter may be provided between the short substrate 2 and the second ITO layer 21, so that the light deflected by the liquid crystal molecules can only display different grayscales through the color filter, and the color and brightness can be adjusted.

[0036] In summary, the utility model adds an In cell structure, the short substrate 2 combines the ITO pattern 211 and the SEG line 212 for realizing the touch function, and the long substrate 4 arranges the COM trace 411, so as to integrate the display layer and the sensing layer of the segment code screen. The structure is simple, and the LCD touch and adjustment can be realized without the LCD external touch screen or physical buttons like the traditional VA segment code screen. The entire touch screen is light and thin, and the cost is low.

[0037] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An In Cell VA segment code LCD, comprising a first polarizer, a short substrate, a liquid crystal module, a long substrate and a second polarizer, wherein the liquid crystal module is arranged in a sealing frame between the short substrate and the long substrate, the first polarizer is attached to a side of the short substrate away from the liquid crystal module, and the second polarizer is attached to a side of the long substrate away from the liquid crystal module, characterized in that: A COM trace is arranged on the first ITO layer covering the surface of the long substrate close to the liquid crystal module, an ITO pattern and a SEG trace are arranged on the second ITO layer covering the surface of the short substrate, the ITO pattern and the SEG trace are connected, and the COM trace and the SEG trace are electrically connected.

2. The In Cell VA segment LCD according to claim 1, characterized in that: The long substrate and the short substrate are ITO glass substrates.

3. The In Cell VA segment LCD according to claim 1, characterized in that: The ITO pattern is made by vapor deposition and acid etching processes.

4. The In Cell VA segment LCD according to claim 1, characterized in that: There is at least one ITO pattern, and the single ITO pattern corresponds to one or more touch function areas provided on a side of the short substrate away from the liquid crystal module.

5. The In Cell VA segment LCD according to claim 4, characterized in that: The SEG wiring is made of indium tin oxide.

6. The In Cell VA segment LCD according to claim 5, characterized in that: The SEG routing is designed in partitions, and the SEG routing in each area is relatively independent and does not overlap with the ITO pattern.

7. The In Cell VA segment LCD according to claim 6, characterized in that: The COM wiring is connected to an external device or a power source by welding, plugging or crimping.

8. The In Cell VA segment LCD according to claim 7, characterized in that: A driving IC is attached to the surface of the long substrate extending out of the short substrate close to the liquid crystal module, and the ends of the SEG wiring and the COM wiring are welded to the pins or welding pads of the driving IC.

9. The In Cell VA segment LCD according to claim 8, characterized in that: The shape and size of the first ITO layer are consistent with those of the sealing frame, and the shape and size of the second ITO layer are consistent with those of the short substrate.

10. The In Cell VA segment LCD according to claim 9, characterized in that: A color filter is provided between the short substrate and the second ITO layer.

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