Conductive glass, display panel and liquid crystal display

Abstract

The utility model discloses conductive glass, a display panel and a liquid crystal display. The conductive glass comprises a glass substrate, a first wire and a second wire, the second wire and the first wire are arranged on the same surface of the glass substrate side by side; wherein the second wire comprises a main circuit and at least one branch circuit, the main circuit and the branch circuit are arranged side by side, the main circuit is used for transmitting a second voltage signal, each branch circuit is connected with the main circuit, and at least one branch circuit is arranged between the main circuit and the adjacent first wire. Under the condition that a second voltage signal is transmitted through the main circuit, the branch circuit is arranged between the main circuit and the first wire, the main circuit and the first wire can be physically separated, meanwhile, no current flows through the branch circuit, so that the second wire and the first wire cannot form an over-strong electric field, and the voltage signal is transmitted through the main circuit. Therefore, the probability of cracking of the wiring used for transmitting low-voltage signals is reduced.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a conductive glass, a display panel and a liquid crystal display. Background Art

[0002] At present, liquid crystal displays have been widely used in various industries. With the development of technology, the reliability of liquid crystal displays has become increasingly demanding. For liquid crystal displays, the reliability test of liquid crystal displays cannot avoid high temperature operation test.

[0003] Some liquid crystal displays use indium tin oxide (ITO) conductive glass to build related circuits. When the voltage difference between two adjacent terminals of an IC (Integrated Circuit Chip) chip is too large, a large electric field will be formed between the traces connected to the two terminals. Under high temperature conditions, the ITO traces connected to the low-voltage terminals are prone to cracking, ultimately affecting the product life. Utility Model Content

[0004] The purpose of the present application is to provide a conductive glass, a display panel and a liquid crystal display, aiming to solve the problem of ITO wiring cracking in traditional ITO conductive glass under high temperature conditions.

[0005] A first aspect of an embodiment of the present application provides a conductive glass, comprising:

[0006] Glass substrate;

[0007] A first wiring, the first wiring being used to transmit a first voltage signal; and

[0008] A second routing line, wherein the second routing line and the first routing line are arranged side by side on the same surface of the glass substrate; wherein the second routing line comprises a main line and at least one branch line, the main line and the branch line are arranged side by side, the main line is used to transmit the second voltage signal, each of the branches is connected to the main line, and at least one branch line is arranged between the main line and the adjacent first routing line.

[0009] In one embodiment, the first end of the main line is used to connect to the first connection terminal to transmit the second voltage signal, and one end of each branch of the same second line is connected to the second end of the main line of the second line.

[0010] In one embodiment, the first routing line is disposed on both sides of the second routing line, and the second routing line includes two branches.

[0011] In one embodiment, the glass substrate includes a substrate layer and a barrier layer;

[0012] The barrier layer is stacked with the substrate layer, and the first routing line and the second routing line are both arranged on the barrier layer.

[0013] In one embodiment, the material of the substrate layer includes soda-lime glass, and the material of the barrier layer includes silicon dioxide.

[0014] In one embodiment, the material of the first wiring and the second wiring includes indium tin oxide.

[0015] In one embodiment, the voltage on the first wiring is not equal to the voltage on the second wiring.

[0016] A second aspect of an embodiment of the present application provides a display panel, comprising an IC chip and the conductive glass as described above, wherein the IC chip is arranged on a glass substrate of the conductive glass, and a first wiring and a second wiring of the conductive glass are both connected to the IC chip.

[0017] In one embodiment, the IC chip is provided with at least one first connecting terminal and at least one second connecting terminal, one of the first connecting terminals is arranged adjacent to at least one of the second connecting terminals, one of the second traces of the conductive glass is connected to one of the first connecting terminals, and one of the first traces of the conductive glass is connected to one of the second connecting terminals.

[0018] A third aspect of the embodiments of the present application provides a liquid crystal display, comprising the display panel as described above.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects: when the second voltage signal is transmitted through the main line, the branch line is set between the main line and the first line, which can physically separate the main line from the first line and avoid the main line and the first line from forming an excessively strong electric field.

[0020] At the same time, since the branch is connected to the main line, there is no voltage difference between the branch and the main line, and no current passes through the branch. Even if there is a large gap between the voltage on the first line and the voltage on the second line, an excessively strong electric field will not be formed, thereby reducing the probability of cracking of the line used to transmit low-voltage signals.

[0021] The embodiment of the present application only improves the second wiring, which will not affect the original circuit design and has a low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of traditional ITO conductive glass;

[0023] Figure 2A schematic diagram of the structure of a conductive glass provided in one embodiment of the present application;

[0024] Figure 3 Another schematic diagram of the structure of the conductive glass provided in one embodiment of the present application;

[0025] Figure 4 A schematic diagram of the structure of a display panel provided in one embodiment of the present application;

[0026] Figure 5 Another schematic diagram of the structure of a display panel provided by an embodiment of the present application;

[0027] Figure 6 A schematic diagram of the structure of a liquid crystal display provided in one embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0030] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 should not be understood as a limitation on the present application.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] It should be noted that in Figure 1In the conventional ITO conductive glass 10 shown, the conventional ITO conductive glass 10 includes a substrate 11 and a higher voltage trace 12 and a lower voltage trace 13 arranged on the substrate 11, wherein the higher voltage trace 12 is used to transmit a higher voltage signal, and the lower voltage trace 13 is used to transmit a lower voltage signal. When the higher voltage trace 12 and the lower voltage trace 13 transmit corresponding signals at the same time, a larger external electric field will be generated between the higher voltage trace 12 and the lower voltage trace 13, and the Na+ ions in the substrate 11 will migrate under the action of the external electric field. The greater the voltage difference between the higher voltage trace 12 and the lower voltage trace 13, the easier it is for the Na+ ions to precipitate.

[0033] Under continuous high temperature conditions, a very small amount of Na+ ions will precipitate near the lower voltage trace 13, and the Na+ ions may combine with OH- ions in the water molecules in the air to form NaOH base.

[0034] The formed NaOH will gradually corrode the surface of the substrate 11 below the lower voltage trace 13, causing the adhesion of the lower voltage trace 13 to deteriorate, and the lower voltage trace 13 will then break under the action of stress. The broken lower voltage trace 13 will increase the exposed area of ​​the substrate 11, accelerate corrosion, and eventually cause the entire lower voltage trace 13 to crack.

[0035] Figure 2 The schematic diagram of the structure of the conductive glass provided by an embodiment of the present application is shown. For the convenience of description, only the part related to the present embodiment is shown, which is described in detail as follows:

[0036] The conductive glass 20 includes a glass substrate 100 , a first wiring 200 and a second wiring 300 .

[0037] The first wiring 200 is disposed on the glass substrate 100 , and the first wiring 200 is used to transmit a first voltage signal.

[0038] The second wiring 300 and the first wiring 200 are arranged side by side on the same surface of the glass substrate 100 . The second wiring 300 is used to transmit a second voltage signal. One second wiring 300 is arranged adjacent to at least one first wiring 200 .

[0039] The second routing line 300 includes a main line 310 and at least one branch line 320 . The main line 310 and the branch line 320 are arranged side by side. The main line 310 is used to transmit a second voltage signal. Each branch line 320 is connected to the main line 310 , and at least one branch line 320 is arranged between the main line 310 and the adjacent first routing line 200 .

[0040] It is understandable that a plurality of lines may be arranged side by side on a glass substrate 100, some of which are first lines 200, and some of which are second lines 300. The first voltage signal and the second voltage signal may be signals with different voltage values. In some embodiments, the first voltage signal is a positive voltage signal, and the second voltage signal is a negative voltage signal. Relatively speaking, the voltage on the first line 200 is greater than the voltage on the second line 300.

[0041] In the case of transmitting the second voltage signal through the main path 310, the branch 320 is set between the main path 310 and the first wiring 200, which can separate the main path 310 from the first wiring 200, increase the distance between the main path 310 and the first wiring 200, and reduce the electric field strength between the main path 310 and the first wiring 200. At the same time, since the branch 320 is connected to the main path 310, there is no voltage difference between the branch 320 and the main path 310, and no current passes through the branch 320. Even if there is a large gap between the voltage on the first wiring 200 and the voltage on the second wiring 300, the first wiring 200 and the branch 320 will not form an excessively strong electric field, ultimately achieving the effect of reducing ion precipitation in the glass substrate 100 and reducing cracking of the wiring used to transmit low voltage signals.

[0042] Since only the second wiring 300 is improved, the original circuit design will not be affected, and the manufacturing cost and the modification cost of this embodiment are relatively low.

[0043] In one embodiment, the first end of the main path 310 is used to connect to the first connection terminal to transmit the second voltage signal, and one end of each branch 320 of the same second wiring 300 is connected to the second end of the main path 310 of the second wiring 300 .

[0044] It can be understood that the first connection terminal can be an external terminal of other circuits or devices. For example, the first connection terminal can be a connection terminal of an IC chip. When the main circuit 310 transmits the second voltage signal, since only one end of the branch circuit 320 is connected to the main circuit 310, although the potential of the branch circuit 320 is the same as that of the main circuit 310, no current flows through the branch circuit 320, and it is difficult to form an electric field with other wirings, thereby reducing ion precipitation of the glass substrate 100.

[0045] The branch circuit 320 also physically separates the main circuit 310 from the adjacent first wiring 200 , thereby preventing the main circuit 310 and the adjacent first wiring 200 from forming an excessively strong electric field.

[0046] In some embodiments, the second end of the main path 310 may be directly or indirectly grounded.

[0047] In one embodiment, if Figure 2As shown, the first routing line 200 is disposed on both adjacent sides of the second routing line 300 , and the second routing line 300 includes two branches 320 .

[0048] The two branches 320 and one main path 310 can form a "mountain" shaped structure, wherein only the main path 310 is connected to the corresponding first connection terminal. Therefore, the probability of cracking of the wiring used to transmit low voltage signals can be reduced without changing the structure of the device or circuit where the first connection terminal is located.

[0049] In one embodiment, if Figure 3 As shown, the glass substrate 100 includes a substrate layer 110 and a barrier layer 120 .

[0050] The barrier layer 120 is stacked with the substrate layer 110 , and the first wiring 200 and the second wiring 300 are both arranged on the barrier layer 120 .

[0051] The barrier layer 120 can isolate the first wiring 200 and the second wiring 300 from the substrate layer 110 , so as to protect the substrate layer 110 when constructing the first wiring 200 and the second wiring 300 .

[0052] At the same time, the barrier layer 120 can also reduce the ion precipitation in the substrate layer 110 , thereby reducing the probability of cracking of the second wiring 300 .

[0053] In one embodiment, the material of the substrate layer 110 includes soda-lime glass, and the material of the barrier layer 120 includes silicon dioxide.

[0054] It should be noted that soda-lime glass is mainly composed of silicon dioxide, calcium oxide and sodium oxide, and Na+ ions exist in the substrate layer 110. The barrier layer 120 composed of silicon dioxide can reduce the precipitation of Na+ ions.

[0055] In one embodiment, the material of the first wiring 200 and the second wiring 300 includes indium tin oxide (ITO).

[0056] When preparing the first wiring 200 and the second wiring 300 , an ITO film may be firstly plated on the barrier layer 120 by magnetron sputtering, and then the first wiring 200 and the second wiring 300 may be constructed by etching the ITO film.

[0057] In one embodiment, the voltage on the first wiring 200 is not equal to the voltage on the second wiring 300. That is, the voltage values ​​of the first voltage signal and the second voltage signal are not equal.

[0058] In some embodiments, the first voltage signal is a positive voltage signal, and the second voltage signal is a negative voltage signal.

[0059] The second line 300 of the embodiment of the present application can reduce cracks in the line for transmitting low voltage signals when the voltage on the first line 200 is not equal to the voltage on the second line 300 .

[0060] In some embodiments, the voltage difference between the first trace 200 and the second trace 300 is not less than 11V.

[0061] It should be noted that in traditional conductive glass, when the voltage difference between a trace and the adjacent traces on both sides is above 11V, the traces in the traditional conductive glass are likely to crack after running at a high temperature of 85 degrees for 120 hours.

[0062] By improving the structure of the second wiring 300, the conductive glass 20 of the embodiment of the present application can operate at a high temperature of 85 degrees for more than 500 hours without cracking the wiring even if the first wiring 200 is provided on both sides of the second wiring 300.

[0063] Figure 4 A schematic diagram of the structure of a display panel provided by an embodiment of the present application is shown. For the sake of convenience, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0064] The display panel 30 includes an IC chip 400 and a conductive glass 20 as in any of the above embodiments. The IC chip 400 is disposed on a glass substrate 100 of the conductive glass 20 . The first wiring 200 and the second wiring 300 of the conductive glass 20 are both connected to the IC chip 400 .

[0065] The IC chip 400 is used to control the driving current and drive the display panel 30. The IC chip 400 can be connected to other devices and circuits through the first wiring 200 and the second wiring 300.

[0066] In one embodiment, the IC chip 400 is provided with at least one first connection terminal and at least one second connection terminal, a first connection terminal is arranged adjacent to at least one second connection terminal, a second trace 300 of the conductive glass 20 is connected to a first connection terminal, and a first trace 200 of the conductive glass 20 is connected to a second connection terminal.

[0067] It is understandable that the IC chip 400 is provided with a plurality of connection terminals, some of which are first connection terminals and some of which are second connection terminals. The first connection terminal can be connected to other devices and circuits through the second wiring 300, and the second connection terminal can be connected to other devices and circuits through the first wiring 200. Since the connection terminals of the IC chip 400 are usually close to each other, the distance between the adjacent first wiring 200 and the second wiring 300 is also close. The second wiring 300 of the conductive glass 20 of this embodiment can reduce the electric field strength between the adjacent first wiring 200, thereby reducing the probability of cracking.

[0068] For example, Figure 5 As shown, in some embodiments, a first connection terminal of the IC chip 400 is grounded through a second wiring 300 and a capacitor C1 in sequence.

[0069] Figure 6 A schematic diagram of the structure of a liquid crystal display provided by an embodiment of the present application is shown. For the sake of convenience, only the parts related to the present embodiment are shown, which are described in detail as follows:

[0070] The liquid crystal display 40 comprises the display panel 30 according to any one of the above embodiments.

[0071] It is understandable that the display panel 30 is a liquid crystal display panel, which can stimulate the liquid crystal molecules in the display panel 30 through electric current to generate points, lines, and surfaces to form a picture in cooperation with the back light tube.

[0072] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0073] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A conductive glass, characterized in that: include: Glass substrate; A first wiring, wherein the first wiring is used to transmit a first voltage signal; as well as A second routing line, wherein the second routing line and the first routing line are arranged side by side on the same surface of the glass substrate; wherein the second routing line comprises a main line and at least one branch line, the main line and the branch line are arranged side by side, the main line is used to transmit a second voltage signal, each of the branches is connected to the main line, and at least one branch line is arranged between the main line and the adjacent first routing line.

2. The conductive glass according to claim 1, characterized in that The first end of the main line is used to connect to the first connection terminal to transmit the second voltage signal, and one end of each branch of the same second wiring is connected to the second end of the main line of the second wiring.

3. The conductive glass according to claim 2, characterized in that: The first routing line is disposed on both sides of the second routing line, and the second routing line includes two branches.

4. The conductive glass according to any one of claims 1 to 3, characterized in that: The glass substrate comprises a substrate layer and a barrier layer; The barrier layer is stacked with the substrate layer, and the first routing line and the second routing line are both arranged on the barrier layer.

5. The conductive glass according to claim 4, characterized in that The material of the substrate layer includes soda-lime glass, and the material of the barrier layer includes silicon dioxide.

6. The conductive glass according to claim 1, wherein: The material of the first wiring and the second wiring includes indium tin oxide.

7. The conductive glass according to claim 1, wherein: The voltage on the first wiring is not equal to the voltage on the second wiring.

8. A display panel, characterized in that: It comprises an IC chip and the conductive glass as claimed in any one of claims 1 to 7, wherein the IC chip is arranged on a glass substrate of the conductive glass, and the first wiring and the second wiring of the conductive glass are both connected to the IC chip.

9. The display panel according to claim 8, wherein: The IC chip is provided with at least one first connection terminal and at least one second connection terminal, one of the first connection terminals is arranged adjacent to at least one of the second connection terminals, one of the second traces of the conductive glass is connected to one of the first connection terminals, and one of the first traces of the conductive glass is connected to one of the second connection terminals.

10. A liquid crystal display, characterized in that: Comprising the display panel as claimed in claim 8 or 9.

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