Display screen panel for detecting internal signals

Abstract

The embodiment of the utility model belongs to the technical field of display screen panels. The utility model further relates to a display screen panel for detecting the internal signals, the display screen panel comprises a display screen panel body, a plurality of metal PADs are arranged on the display screen panel body, non-direct-current signals needing to be tested are connected with the metal PADs, and a metal induction block is arranged on one face of the display screen panel body. According to the display screen panel, the metal PAD is designed on the display screen panel main body (generally at the position without a complex circuit and a wiring area), a non-direct-current signal needing to be tested is connected to the metal PAD, when the signal needs to be tested, a metal induction block can be placed on the outer side of the display screen panel main body, the metal induction block and the metal PAD jointly form a parallel capacitor, and the parallel capacitor is connected with the display screen panel main body. The non-direct-current signal measurement in the display screen panel main body is realized through the capacitance coupling effect by utilizing the characteristic that the capacitance resists direct current to alternating current, so that the screen damage risk possibly caused by destructive disassembly is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to display screen panel technical field more specifically, relate to a kind of display screen panel of internal signal detection. BACKGROUND

[0002] In current panel industry, for the test of each signal of bad product display screen, mainly destructive disassembly method is adopted, traditional test PAD is designed in single layer glass area, the protective layer of single layer glass area is removed first during testing, test PAD is exposed, and then signal in display screen is measured by piercing test PAD with needle, however, this contact type test method has many disadvantages: the glass of display screen is very thin, in the disassembly process, a little carelessness will cause screen damage, and then corresponding signal cannot be measured, moreover, screen section destroys the structure of display screen, cannot judge whether signal changes after screen section according to display effect, since the number of bad display screen is usually limited, once destroyed, it is difficult to carry out in-depth analysis, seriously affect the success rate of bad screen analysis, bring great difficulty to bad product detection work of panel industry. Therefore we improve, and propose a kind of display screen panel of internal signal detection. SUMMARY

[0003] The technical problem to be solved by the embodiment of the utility model is that the screen is easy to be damaged in contact type test, which affects the success rate of bad screen analysis.

[0004] To solve the above technical problem, the utility model adopts the technical scheme as follows:

[0005] A kind of display screen panel of internal signal detection, comprising: display screen panel main body, the display screen panel main body is provided with several metal PAD, the non-direct current signal to be tested is connected with metal PAD, one side of display screen panel main body is provided with metal induction block.

[0006] As an improved mode of the utility model, the metal induction block and the metal PAD form parallel capacitor, and the measurement of non-direct current signal in the display screen panel main body is realized by the capacitive coupling effect.

[0007] As an improved mode of the utility model, the display screen panel main body includes first glass layer and second glass layer, and the liquid crystal layer is arranged between the first glass layer and the second glass layer.

[0008] As an improved mode of the utility model, the first glass layer and the second glass layer are further provided with frame glue, and the frame glue is arranged around the liquid crystal layer.

[0009] As an improved mode of the utility model, the display screen panel main body has display area and non-display area, and the metal PAD is arranged at the non-display area.

[0010] As an improved mode of the utility model, the first glass layer is provided with a traditional test PAD.

[0011] As an improved mode of the utility model, the metal PAD is horizontally arranged, and the spacing of the metal PAD is same.

[0012] As an improved mode of the utility model, the opposite side of the metal induction block and the metal PAD is a plane, and the area of the metal induction block is greater than or equal to the total area of the metal PAD.

[0013] As an improved mode of the utility model, the metal PAD is connected with the non-DC signal to be tested through the metal wire.

[0014] As an improved mode of the utility model, the outer side of the first glass layer and the second glass layer is provided with an explosion-proof film.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] In order to solve the problem that the contact type test in the prior art is easy to damage the screen and affects the success rate of bad screen analysis, the metal PAD is designed on the display screen panel body (usually at the position without complex circuit and wire region), and the non-DC signal to be tested is connected to the metal PAD. When the signal needs to be tested, a metal induction block can be placed outside the display screen panel body, the metal induction block and the metal PAD jointly form a parallel capacitor, the characteristic that the capacitor blocks DC and passes AC is utilized, the measurement of the non-DC signal in the display screen panel body is realized through the capacitor coupling effect, not only the risk of screen damage caused by destructive disassembly is reduced, but also the signal measurement can be carried out without damaging the display screen panel body, so that the possibility of verification through display effect is reserved. In addition, since destructive disassembly is not needed, the bad display screen panel body can be reserved for further in-depth analysis after testing, which is of great significance for improving product quality and yield. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic diagram of the display screen panel for detecting internal signal is provided for the application;

[0018] Figure 2 The side view structure schematic diagram of the display screen panel for detecting internal signal is provided for the application;

[0019] Figure 3 The local structure schematic diagram of the display screen panel for detecting internal signal is provided for the application;

[0020] Figure 4The structural diagram of the metal PAD of the display screen panel for detecting internal signals is provided.

[0021] The figure indicates:

[0022] 1, display screen panel body; 101, first glass layer; 102, liquid crystal layer; 103, frame glue; 104, traditional test PAD; 105, second glass layer; 2, metal PAD; 3, metal induction block. DETAILED DESCRIPTION

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the term "exemplary" means that an example is being described, and does not mean that the example is preferred or required. The terms "comprises", "comprising", "includes", "including", "has", "having", "contains", "containing", or variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises, has, contains, or contains any combination of elements listed is not limited to the combination of elements listed. The terms "about" and "substantially" are used herein to refer to a range of values that are close to a value of interest, such that the range of values is within a reasonable expectation of a person of ordinary skill in the art. For example, "about" and "substantially" can refer to a range of values that are within 10%, 5%, or 1% of the value of interest. The term "coupled" is used herein to refer to the direct or indirect connection between two elements. For example, if a first element is coupled to a second element, that connection can be through a direct connection, or through an indirect connection via one or more additional elements.

[0024] As described in the background, for the test of each signal of the defective display screen, a destructive disassembly method is mainly used, the traditional test PAD is designed in the single-layer glass area, the protective layer of the single-layer glass area needs to be removed to expose the test PAD before testing, and then the test PAD is measured by piercing the test PAD with a needle. However, this contact type test method has many disadvantages: the glass of the display screen is very thin, and in the disassembly process, a slight carelessness will cause the screen to be damaged, and then the corresponding signal cannot be measured, and the structure of the display screen is damaged by dissection, and it is not possible to judge whether the signal changes after dissection according to the display effect, since the number of defective display screens is usually limited, once damaged, it is difficult to carry out in-depth analysis, which seriously affects the success rate of defective screen analysis, and brings great difficulty to the detection of defective products in the panel industry.

[0025] In order to solve the technical problem, the utility model provides a display screen panel for detecting internal signals.

[0026] Specifically, please refer to Figures 1-4 The display screen panel for detecting internal signals specifically comprises:

[0027] A display screen panel body 1 is provided with a plurality of metal PADs 2, the non-direct current signal to be tested is connected with the metal PAD 2, and one side of the display screen panel body 1 is provided with a metal induction block 3.

[0028] The display screen panel for detecting internal signals provided by the utility model, the present application designs metal PAD 2 on display screen panel main body 1 (usually at the position of no complex circuit and wiring area), and connects the non-direct current signal needing to be tested to metal PAD 2, when needing to test the signal, can place a metal induction block 3 outside display screen panel main body 1, metal induction block 3 and metal PAD 2 jointly form a parallel capacitor, utilizes the characteristic that capacitor blocks direct current and passes alternating current, realizes the measurement of non-direct current signal in display screen panel main body 1 through the capacitive coupling effect, not only reduces the screen breakage risk possibly caused by destructive disassembly, and can carry out signal measurement under the premise of not damaging display screen panel main body 1, thereby preserving the possibility of verifying through display effect, in addition, since destructive disassembly is not needed, the poor display screen panel main body 1 can be reserved for further in-depth analysis after testing, which has important significance for improving product quality and yield.

[0029] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings.

[0030] It should be noted that the embodiments and the features and technical solutions in the embodiments in the utility model can be combined with each other without conflict.

[0031] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0032] The embodiment one of the display screen panel for detecting internal signals

[0033] Please refer to Figures 1-4 The display screen panel for detecting internal signals provided by the utility model comprises: display screen panel main body 1, a plurality of metal PAD 2 are arranged on display screen panel main body 1, the non-direct current signal needing to be tested is connected with metal PAD 2, and one side of display screen panel main body 1 is provided with a metal induction block 3; metal PAD 2 is used for connecting the non-direct current signal needing to be tested, it is like a signal relay station, can accurately gather the internal non-direct current signal, and metal induction block 3 cooperates with metal PAD 2, constitutes the necessary component part for realizing capacitive coupling detection signal, and lays a solid foundation for accurately detecting signal.

[0034] Further, the metal sensing block 3 and the metal PAD 2 form a parallel capacitor, and the non-DC signal in the display screen panel body 1 is measured through capacitive coupling, which not only reduces the risk of screen damage caused by destructive disassembly, but also enables signal measurement without damaging the display screen panel body 1, thereby preserving the possibility of verifying through display effects, and in addition, since destructive disassembly is not required, defective display screen panel bodies 1 can be retained for further in-depth analysis after testing, which is of great significance to improving product quality and yield.

[0035] Since the physical damage of the display screen panel body 1 caused by disassembly is reduced, the loss cost in the detection process is reduced, which means that when a large number of display screen panel bodies 1 are detected, the number of waste caused by detection can be reduced, thereby saving resources and costs.

[0036] Capacitive characteristics: Capacitors have the characteristics of "blocking DC and passing AC", which enables non-DC signals (AC signals or pulse signals) to be transmitted from the metal PAD 2 to the metal sensing block 3 through capacitive coupling without physically disassembling the display screen panel body 1, reducing damage to the panel structure. The clever use of this feature makes the detection process more convenient.

[0037] Signal coupling and detection: When the internal signal of the display screen panel body 1 changes (such as an AC signal or a pulse signal), the external metal sensing block 3 and the internal metal PAD 2 will induce corresponding signal changes on the external metal sensing block 3 through capacitive coupling. By detecting the voltage or current change of the external metal sensing block 3, the characteristics of the internal signal of the display screen panel body 1 such as waveform, frequency, and amplitude can be indirectly obtained without damaging the structure of the display screen panel body 1.

[0038] Embodiment two of the display screen panel for detecting internal signals

[0039] Further, as shown in Figures 2-3 The display screen panel body 1 includes a first glass layer 101 and a second glass layer 105, and a liquid crystal layer 102 is arranged between the first glass layer 101 and the second glass layer 105. The first glass layer 101 and the second glass layer 105 cooperate to protect the liquid crystal layer 102, effectively blocking dust, moisture, and impurities from the outside from entering the liquid crystal layer 102, reducing interference of these substances on the arrangement and movement of liquid crystal molecules, thereby ensuring the normal operation of the liquid crystal layer 102 and the stability of the display effect. The first glass layer 101 and the second glass layer 105 provide mechanical support for the liquid crystal layer 102, can buffer external impact force, reduce damage to the liquid crystal layer 102 caused by collision, extrusion, etc., and prolong the service life of the display screen panel body 1.

[0040] Further, as shown in Figures 2-3 The frame glue 103 is arranged between the first glass layer 101 and the second glass layer 105, surrounds the liquid crystal layer 102, and can connect the first glass layer 101 and the second glass layer 105 together. The frame glue 103 can protect the liquid crystal layer 102, enhance the stability of the display panel body 1, and improve the strength and anti-deformation ability of the display panel body 1.

[0041] Further, as shown in Figure 3 The display panel body 1 has a display area and a non-display area, and the metal PAD 2 is arranged at the non-display area, so as to avoid affecting the display effect of the display panel body 1.

[0042] Further, as shown in Figure 1 And Figure 4 The traditional test PAD 104 is arranged on the first glass layer 101. Although the parallel capacitor composed of the metal sensing block 3 and the metal PAD 2 is mainly used for non-contact measurement, in some cases, it may be necessary to use a traditional test method for verification or supplementary test. The arrangement of the traditional test PAD 104 makes it possible to test the display panel body 1 by using a traditional contact test method, increases the flexibility and diversity of the test, and can more comprehensively detect the performance of the display panel body 1.

[0043] Embodiment three of the display panel for detecting internal signals

[0044] Further, as shown in Figure 2 The metal PADs 2 are arranged in a horizontal manner and have the same spacing, which ensures that the capacitance characteristics formed between each metal PAD 2 and the metal sensing block 3 are more consistent, makes the coupling effect of each metal PAD 2 on the signal more uniform and stable during capacitive coupling, reduces the signal detection error caused by the capacitance difference, and more accurately reflects the change of the internal signal of the display panel body 1, thereby providing more accurate data for subsequent analysis and processing. The same spacing and horizontal arrangement make the manufacturing and installation of the metal PAD 2 more standardized, which is beneficial to improving the production efficiency and the stability of the product quality.

[0045] Further, the side of the metal sensing block 3 opposite to the metal PAD 2 is a plane, and the area of the metal sensing block 3 is greater than or equal to the total area of the metal PAD 2, the side of the metal sensing block 3 opposite to the metal PAD 2 is a plane, which can make the electric field distribution between the two more uniform, which is conducive to the capacitive coupling, and the area of the metal sensing block 3 is greater than or equal to the total area of the metal PAD 2, which can more effectively receive the signal coupled from the metal PAD 2, enhance the capacitive coupling effect, thereby improving the sensitivity of signal detection, and more accurately detecting the weak changes of the signal inside the display screen panel body 1.

[0046] Further, the metal PAD 2 is connected with the non-DC signal to be tested through the metal trace, the metal trace has good conductivity and can stably transmit the non-DC signal to be tested to the metal PAD 2, compared with other transmission modes, the resistance of the metal trace is smaller, and the loss in the signal transmission process is also smaller, which can ensure the integrity and accuracy of the signal, thereby improving the reliability of signal detection.

[0047] Further, the outer sides of the first glass layer 101 and the second glass layer 105 are provided with explosion-proof films, in the use process, the display screen panel body 1 may be impacted by external force or other factors, causing the first glass layer 101 and the second glass layer 105 to break, the explosion-proof films can adhere the fragments together when the first glass layer 101 and the second glass layer 105 break, reducing the fragments flying out to cause harm to the surrounding people or objects, and improving the safety of the display screen panel in the use process.

[0048] In use, a signal detection device is provided, which is connected with the metal sensing block 3; the display screen panel body 1 is started, so that the non-DC signal to be tested is transmitted to the metal PAD 2; and the signal coupled on the metal sensing block 3 is detected through the signal detection device.

[0049] Obviously, the above-described embodiments are only some embodiments of the present application, not all embodiments, and the preferred embodiments of the present application are given in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or equivalently replace some technical features therein. Any equivalent structure made by using the contents of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. A display panel for detecting internal signals, characterized in that, include: The main body of the display panel (1) is provided with several metal PADs (2). The non-DC signal to be tested is connected to the metal PADs (2). A metal sensing block (3) is provided on one side of the main body of the display panel (1).

2. The display panel for detecting internal signals according to claim 1, characterized in that, The metal sensing block (3) and the metal PAD (2) form a parallel capacitor, which realizes the measurement of non-DC signals in the main body (1) of the display panel through capacitive coupling.

3. The display panel for detecting internal signals according to claim 1 or 2, characterized in that, The main body (1) of the display panel includes a first glass layer (101) and a second glass layer (105), and a liquid crystal layer (102) is disposed between the first glass layer (101) and the second glass layer (105).

4. The display panel for detecting internal signals according to claim 3, characterized in that, A frame adhesive (103) is also provided between the first glass layer (101) and the second glass layer (105), and the frame adhesive (103) is provided around the liquid crystal layer (102).

5. The display panel for detecting internal signals according to claim 4, characterized in that, The main body of the display panel (1) has a display area and a non-display area, and the metal PAD (2) is disposed in the non-display area.

6. The display panel for detecting internal signals according to claim 5, characterized in that, A conventional test PAD (104) is disposed on the first glass layer (101).

7. The display panel for detecting internal signals according to claim 6, characterized in that, Several metal PADs (2) are arranged horizontally, and the spacing between the metal PADs (2) is the same.

8. The display panel for detecting internal signals according to claim 7, characterized in that, The side of the metal sensing block (3) opposite to the metal PAD (2) is a plane, and the area of ​​the metal sensing block (3) is greater than or equal to the total area of ​​the metal PAD (2).

9. The display panel for detecting internal signals according to claim 8, characterized in that, The metal PAD (2) is connected to the non-DC signal to be tested via metal traces.

10. The display panel for detecting internal signals according to claim 9, characterized in that, An explosion-proof film is provided on the outer side of both the first glass layer (101) and the second glass layer (105).

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