An Incell touch segment code display panel

Abstract

The invention discloses an Incell touch segment code display panel, comprising a COM-ITO glass layer, a SEG-ITO glass layer, a frame glue and a liquid crystal. The SEG-ITO glass layer is bonded to the lower surface of the COM-ITO glass layer by the frame glue. The SEG-ITO glass layer is provided with SEG electrodes, SEG wiring, touch transmitting electrodes and touch transmitting wiring. The COM-ITO glass layer is provided with COM electrodes, COM wiring, touch receiving electrodes and touch receiving wiring. The touch receiving electrodes on the COM-ITO glass layer are used to receive capacitive signals. The touch transmitting electrodes on the SEG-ITO glass layer are used to transmit capacitive signals. The invention makes the touch receiving electrodes and the COM electrodes of the display pattern on the lower surface of the upper ITO glass in the liquid crystal screen at the same time, makes the touch transmitting electrodes and the SEG electrodes of the display pattern on the upper surface of the lower ITO glass in the liquid crystal screen at the same time, and embeds the pattern of the touch display button in the area of ​​the touch receiving electrode, thereby eliminating the external touch screen, enhancing the touch effect, reducing the product cost, reducing the product thickness, and simplifying the bonding process.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal display touch technology, and in particular to an Incell touch-controlled broken-code display panel. Background Art

[0002] At present, there are more and more touch display module products on the market, and they are more and more widely used in the fields of vehicle-mounted central control instruments, industrial control equipment, smart home appliances, etc. Touch display panels can be divided into touch receiving electrodes according to different structures.

[0003] The on-cell type, the touch receiving electrode embedded in the liquid crystal box type, and the external type. Currently, the broken code display touch screens on the market all adopt the Oncell and Outll design methods. Compared with Oncell and Outll, the In Cell type has the advantages of low cost, thin thickness, and simple bonding process.

[0004] Regarding InCell touch display panels, there are currently no segment code display products on the market that use a mutual-capacitive or self-capacitive Incell structure. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an Incell touch segment code display panel, which achieves the purpose of simplifying the process, optimizing the structure and reducing the cost by embedding the touch electrodes inside the segment code display panel.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An Incell touch segment code display panel comprises a COM-ITO glass layer, a SEG-ITO glass layer, a frame glue and liquid crystal.

[0008] The SEG-ITO glass layer is bonded to the lower surface of the COM-ITO glass layer by frame adhesive.

[0009] The SEG-ITO glass layer is provided with SEG electrodes, SEG wirings, touch emission electrodes and touch emission wirings.

[0010] The COM-ITO glass layer is provided with COM electrodes, COM wiring, touch receiving electrodes and touch receiving wiring.

[0011] The liquid crystal is located between the lower surface of the COM-ITO glass layer and the upper surface of the SEG-ITO glass layer.

[0012] The COM electrode on the COM-ITO glass layer serves as a reference voltage electrode for displaying patterns.

[0013] The SEG electrodes on the SEG-ITO glass layer serve as input signal receiving electrodes for displaying patterns.

[0014] Liquid crystal molecules are arranged between the SEG electrode and the COM electrode to control the opening and closing of the display pattern.

[0015] As a preferred technical solution of the present invention: the touch receiving electrodes on the COM-ITO glass layer are used to receive capacitance signals; the touch transmitting electrodes on the SEG-ITO glass layer are used to transmit capacitance signals.

[0016] As another preferred technical solution of the present invention: the touch electrodes on the COM-ITO glass layer are used to generate their own reference capacitance signals and collect self-capacitance signals generated by coupling with human fingers.

[0017] As a further description of the above technical solution:

[0018] The COM electrode corresponding to the display pattern is embedded in the touch receiving electrode.

[0019] As a further description of the above technical solution:

[0020] The shape and size of the COM electrode corresponding to the display pattern should be consistent with or exceed that of the SEG electrode.

[0021] As a further description of the above technical solution:

[0022] The outer edges of the COM electrodes corresponding to the display pattern and the outer edges of the touch receiving electrodes must be kept larger than 0.1 mm.

[0023] As a further description of the above technical solution:

[0024] The outer edges of the SEG electrodes corresponding to the display pattern and the outer edges of the touch emission electrodes must be kept larger than 0.1 mm.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] In the present invention, the touch receiving electrode and the COM electrode of the display pattern are simultaneously made on the lower surface of the upper ITO glass in the liquid crystal screen, the touch transmitting electrode and the SEG electrode of the display pattern are simultaneously made on the upper surface of the lower ITO glass in the liquid crystal screen, and the pattern of the touch display button is embedded in the area of ​​the touch receiving electrode, thereby eliminating the use of an external touch screen, enhancing the touch effect, reducing product cost, reducing product thickness, and simplifying the bonding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1A schematic diagram of the stacked structure of a mutual capacitance Incell touch segment code display panel provided according to Embodiment 1 of the present invention is shown.

[0028] Figure 2 A circuit structure diagram of a mutual capacitance Incell touch segment code display panel provided according to Embodiment 1 of the present invention is shown.

[0029] Figure 3 A schematic diagram of the equivalent principle of a touch fingertip and touch technology implementation of a mutual capacitance Incell touch segment code display panel provided according to Embodiment 1 of the present invention is shown.

[0030] Figure 4 A schematic diagram of the stacked structure of a self-capacitive Incell touch segment code display panel provided according to Embodiment 2 of the present invention is shown.

[0031] Figure 5 A circuit structure schematic diagram of a self-capacitive Incell touch segment code display panel provided according to Embodiment 2 of the present invention is shown.

[0032] Figure 6 A schematic diagram of the equivalent principle of a touch fingertip and touch technology implementation of a self-capacitive Incell touch segment code display panel provided according to Embodiment 2 of the present invention is shown.

[0033] Legend:

[0034] 101. COM-ITO glass layer; 102. Touch receiving wiring; 103. Frame glue; 104. SEG wiring; 105. SEG-ITO glass layer; 106. COM electrode; 107. Touch receiving electrode; 108. Liquid crystal; 109. SEG electrode; 110. COM wiring; 111. Touch transmitting wiring; 112. Touch transmitting electrode; 113. Touch button gold finger; 114. LCD driver chip gold finger; 115. Touch electrode; 116. Touch wiring. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1:

[0036] See also Figure 1-3A mutual capacitance Incell touch segment code display panel includes a COM-ITO glass layer 101, a SEG-ITO glass layer 105, a frame glue 103, and a liquid crystal 108.

[0037] The COM-ITO glass layer 101 and the SEG-ITO glass layer 105 are bonded by means of frame glue, and the frame glue 103 is coated along the four edges of the lower glass.

[0038] The COM electrode 106 on the COM-ITO glass layer 101 is used as a reference voltage electrode for the display pattern; the touch receiving electrode 107 on the COM-ITO glass layer 101 is used to receive the capacitance signal generated by the finger contacting the electrode. The area of ​​the touch receiving electrode should be as large as possible when there is enough wiring space. Its outer contour can be made into any shape such as circle, square, triangle or even irregular figure according to the actual display interface. Because the display pattern corresponds to the COM electrode 106 embedded in the touch receiving electrode 107, theoretically the effective area of ​​the touch receiving electrode 107 needs to exceed 100mm² to ensure a sufficiently large coupling capacitance and increase the recognition success rate. In this case, the outer contour of the touch receiving electrode 107 needs to be adjusted to ensure sufficient electrode area.

[0039] like Figure 2 As shown, the touch receiving electrode 107 is connected to the outside through the touch receiving wiring 102. When a finger touches the electrode, the received capacitance signal is transmitted to the touch button gold finger through the touch receiving wiring 102, thereby achieving electrical connection with an external device.

[0040] The touch transmitting electrode 112 on the SEG-ITO glass layer 105 is used to transmit capacitive signals. The area of ​​the touch transmitting electrode 112 should be as large as possible when there is enough space for wiring. Its outer contour can be made into any shape such as circle, square, triangle or even irregular figure according to the actual display interface. In theory, the effective area of ​​the electrode needs to exceed 100mm² to ensure a sufficiently large coupling capacitance and increase the recognition success rate.

[0041] The overlapping area of ​​the touch transmitting electrode 112 and the touch receiving electrode 107 for the corresponding touch button in the vertical space should be more than 100 mm² to ensure that there is a sufficiently large mutual capacitance value between the touch transmitting electrode 112 and the touch receiving electrode 107, which can enhance the sensitivity in practical applications.

[0042] The touch emission electrode 112 is connected to the outside through the touch emission wire 111 , and the external input signal is transmitted to the touch emission electrode 112 through the touch emission wire 111 connected to the touch button gold finger.

[0043] The touch control module adopts the mutual capacitance principle, such as Figure 3As shown, when the finger does not touch the touch electrode, the mutual capacitance value between the touch transmitting electrode 112 and the touch receiving electrode 107 is Ch. When the finger touches the touch electrode, a part of the capacitance Cf in the original mutual capacitance Ch will be absorbed by the human body, which eventually causes the mutual capacitance value at that location to become smaller. Therefore, the external controller judges and identifies through the change of this capacitance. Compared with the self-capacitance method, this design can greatly improve the sensitivity of the touch button and achieve a better operating experience.

[0044] The SEG electrode 109 on the SEG-ITO glass layer 105 serves as an input signal receiving electrode for displaying a pattern.

[0045] The outer contour of the COM electrode 106 corresponding to the display pattern should be consistent with or exceed the SEG electrode 109. For a touch button on the panel, its corresponding SEG electrode 109 should be completely contained in the corresponding COM electrode 106 in the vertical space.

[0046] The COM electrode 106 is connected to the outside through a COM line 110 , and all COM lines 110 are connected together to provide a reference voltage for all SEG electrodes 109 .

[0047] The SEG electrode 109 is led out through the SEG wiring 104 and connected to the outside.

[0048] Liquid crystal molecules 108 are arranged between the SEG electrode 109 and the COM electrode 106. When an external signal is sent to the COM electrode 106 and the SEG electrode 109, a voltage difference is generated between the two electrodes to change the direction of the liquid crystal molecules 108 to control the transmittance of the backlight source, thereby controlling the brightness of the touch button display pattern. Embodiment 2:

[0049] See also Figure 4-6 A self-capacitive Incell touch segment code display panel includes a COM-ITO glass layer 101, a SEG-ITO glass layer 105, a frame glue 103, and a liquid crystal 108; the COM-ITO glass layer 101 and the SEG-ITO glass layer 105 are bonded by frame glue, and the frame glue 103 is coated along the four edges of the upper glass; the COM electrode 106 on the COM-ITO glass layer 101 is used as a reference voltage electrode for displaying a pattern; the touch electrode 115 on the COM-ITO glass layer 101 is used to generate a self-generated reference capacitance signal and collect a self-capacitance signal generated by coupling with a human finger. The area of ​​the touch electrode is as large as possible when there is enough wiring space. Theoretically, it needs to exceed 100mm² to ensure a sufficiently large coupling capacitance and increase the recognition success rate.

[0050] like Figure 5As shown, the touch electrodes 115 are led out through touch wirings 116 to be connected to the outside.

[0051] The touch module adopts the self-capacitance principle, such as Figure 6 As shown, when the finger does not touch the touch electrode 115, the capacitance value of the electrode itself to the ground is Cbackground. When the finger touches the touch electrode, the equivalent resistance of the human body to the ground will be connected in parallel to Cfinger, and the equivalent resistance of the human body Rtrace will be connected in series to the touch electrode, which will eventually cause the capacitance value at this point to increase. Therefore, the external controller makes judgments and identifications based on the changes in this capacitance.

[0052] The SEG electrode 109 on the SEG-ITO glass layer 105 serves as an input signal receiving electrode for displaying a pattern.

[0053] The shape and size of the COM electrode 106 corresponding to the display pattern should be consistent with or exceed that of the SEG electrode 109 .

[0054] The COM electrode 106 is connected to the outside through the COM trace 110, and all the COM traces 110 are connected together.

[0055] The SEG electrode 109 is led out through the SEG wiring 104 and connected to the outside.

[0056] Liquid crystal molecules 108 are disposed between the SEG electrode 109 and the COM electrode 106 . When an external signal is sent to the COM electrode 106 and the SEG electrode 109 , a voltage difference is generated between the two electrodes to change the direction of the liquid crystal molecules 108 to control the opening and closing of the display pattern.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An Incell touch segment code display panel, comprising a COM-ITO glass layer, a SEG-ITO glass layer, a frame glue and a liquid crystal, characterized in that: The SEG-ITO glass layer is bonded to the lower surface of the COM-ITO glass layer by frame glue; the SEG-ITO glass layer is provided with SEG electrodes, SEG wiring, touch transmitting electrodes and touch transmitting wiring; the COM-ITO glass layer is provided with COM electrodes, COM wiring, touch receiving electrodes and touch receiving wiring, and is characterized in that: the touch receiving electrodes on the COM-ITO glass layer are used to receive capacitive signals; the touch transmitting electrodes on the SEG-ITO glass layer are used to transmit capacitive signals.

2. The Incell touch segment code display panel according to claim 1, characterized in that: The touch electrodes on the COM-ITO glass layer are used to generate their own reference capacitance signals and collect self-capacitance signals generated by coupling with human fingers.

3. The Incell touch segment code display panel according to claim 1, characterized in that: The COM electrode on the COM-ITO glass layer serves as a reference voltage electrode for displaying patterns.

4. The Incell touch segment code display panel according to claim 1, characterized in that: The SEG electrodes on the SEG-ITO glass layer serve as input signal receiving electrodes for displaying patterns.

5. The Incell touch segment code display panel according to claim 1, characterized in that: Liquid crystal molecules are arranged between the SEG electrode and the COM electrode to control the opening and closing of the display pattern.

6. The Incell touch segment code display panel according to claim 1, characterized in that: The liquid crystal is located between the lower surface of the COM-ITO glass layer and the upper surface of the SEG-ITO glass layer.

7. An Incell touch segment code display panel according to any one of claims 3, 4 and 5, characterized in that: The COM electrode corresponding to the display pattern is embedded in the touch receiving electrode.

8. An Incell touch segment code display panel according to any one of claims 3, 4 and 5, characterized in that: The shape and size of the COM electrode corresponding to the display pattern should be consistent with or exceed that of the SEG electrode.

9. The Incell touch segment code display panel according to any one of claims 3, 4 and 5, characterized in that: The outer edges of the COM electrodes corresponding to the display pattern and the outer edges of the touch receiving electrodes must be kept larger than 0.1 mm.

10. The Incell touch segment code display panel according to any one of claims 3, 4 and 5, characterized in that: The outer edges of the SEG electrodes corresponding to the display pattern and the outer edges of the touch emission electrodes must be kept larger than 0.1 mm.

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