WO2020220598A1 - 显示屏以及测试设备 - Google Patents

显示屏以及测试设备 Download PDF

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Publication number
WO2020220598A1
WO2020220598A1 PCT/CN2019/111726 CN2019111726W WO2020220598A1 WO 2020220598 A1 WO2020220598 A1 WO 2020220598A1 CN 2019111726 W CN2019111726 W CN 2019111726W WO 2020220598 A1 WO2020220598 A1 WO 2020220598A1
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WO
WIPO (PCT)
Prior art keywords
terminal
test
external terminal
display screen
screen
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PCT/CN2019/111726
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English (en)
French (fr)
Inventor
孙京涛
李素华
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云谷（固安）科技有限公司
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Publication of WO2020220598A1 publication Critical patent/WO2020220598A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/02—General constructional details
    • G01R1/04—Housings; Supporting members; Arrangements of terminals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Definitions

  • the present application relates to the technical field of display screen testing, in particular to a display screen and test equipment.
  • the cell test is the step of dot screen inspection and aging test on the screen of a single display screen before bonding (chip coating), which can screen out poorly displayed screens before putting them into the module. body.
  • test terminals on the display are usually damaged due to alignment errors. Minor injuries can cause circuit damage, and more serious injuries can cause test terminals after passing through high temperature and high humidity environments. corrosion.
  • the main technical problem to be solved by the present application is to provide a display screen and test equipment, which can reduce the damage of the first external terminal or the second external terminal to the test terminal of the display screen when it is misaligned.
  • a technical solution adopted in the embodiments of the present application is to provide a display screen, including:
  • Non-display part located on the periphery of the display part
  • test terminals are arranged on the non-display part.
  • the test terminals include at least a first test terminal and a second test terminal.
  • the first test terminal and the second test terminal are electrically connected to the display part.
  • the first test terminal and the second test terminal are respectively For connecting the first external terminal and the second external terminal of the test equipment to test the display screen, the potential difference between the first external terminal and the second external terminal is greater than the first preset value;
  • At least one screen protection terminal is arranged on the non-display part and located between the first test terminal and the second test terminal.
  • the screen protection terminal is not connected to the circuit of the display screen, or the screen protection terminal is connected to the first external terminal Or the potential difference between the second external terminals is less than the second preset value, and the second preset value is less than or equal to the first preset value.
  • test device which includes a test circuit, a first external terminal and a second external terminal connected to the test circuit, the first external terminal and the second external terminal.
  • the potential difference of the external terminals is greater than the first preset value
  • At least one test equipment protection terminal is included between the first external terminal and the second external terminal.
  • the test equipment protection terminal is not connected to the circuit of the test equipment, or the test equipment protection terminal is between the first test terminal or the second test terminal of the display screen.
  • the potential difference between the two is less than the second preset value, and the second preset value is less than or equal to the first preset value.
  • the display screen of the embodiment of the present application includes: a display part; a non-display part located on the periphery of the display part; a number of test terminals arranged on the non-display part, the test terminals include at least a first test terminal and a second test terminal, the first test terminal and The second test terminal is electrically connected to the display part.
  • the first test terminal and the second test terminal are respectively used to connect the first external terminal and the second external terminal of the test equipment to test the display screen.
  • the first external terminal and the second external terminal The potential difference of the terminals is greater than the first preset value; at least one screen protection terminal is arranged on the non-display part and is located between the first test terminal and the second test terminal.
  • the screen protection terminal is not connected to the circuit of the display screen , Or the potential difference between the screen protection terminal and the first external terminal or the second external terminal is less than the second preset value, and the second preset value is less than or equal to the first preset value.
  • the first external terminal, the second external terminal and the test terminal are misaligned during the corresponding connection process, the first external terminal or the second external terminal is connected to the screen protection terminal, and the screen protection terminal is not connected to the circuit of the display screen Connection, or the potential difference between the screen protection terminal and the first external terminal or the second external terminal is less than the second preset value, which can reduce the damage to the test terminal of the display screen when the first external terminal or the second external terminal is misaligned .
  • FIG. 1 is a schematic diagram of the structure of a display screen and a testing device in an embodiment of the present application
  • FIG. 2 is a schematic diagram of the connection relationship between the test terminal and the external terminal of the present application when the connection is misplaced;
  • FIG. 3 is a schematic diagram of the connection relationship between the test terminal and the external terminal of the present application when another misplaced connection is made;
  • FIG. 4 is a schematic diagram of another structure of the test device according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another structure of the test device according to an embodiment of the present application.
  • FIG. 1 is a schematic diagram of the structure of the display screen and the test equipment according to the embodiment of the present application.
  • the display screen 10 includes a display portion 11, a non-display portion 12, a number of test terminals and a screen protection terminal 14.
  • the display unit 11 is provided with a display unit array, and the display unit array includes a plurality of display units arrayed on the display unit 11.
  • the non-display portion 12 is located on the periphery of the display portion 11.
  • the test terminals include at least a first test terminal 13a and a second test terminal 13b.
  • Both the first test terminal 13a and the second test terminal 13b are disposed on the non-display part 12, and the first test terminal 13a and the second test terminal 13b are both electrically connected to the display part 11.
  • the first test terminal 13a and the second test terminal 13b are respectively used to connect the first external terminal 21 and the second external terminal 22 of the test device 20 to test the display screen 10.
  • the first test terminal 13a is used for electrical connection with the first external terminal 21 of the test device 20
  • the second test terminal 13b is used for electrical connection with the second external terminal 22 of the test device 20.
  • the potential difference between the first external terminal 21 and the second external terminal 22 is greater than the first preset value.
  • the first external terminal 21 is the positive pole of the power supply
  • the second external terminal 22 is the negative pole of the power supply.
  • the potential on the first external terminal 21 is ELVDD (4.2V)
  • the potential on the second external terminal 22 is ELVSS (-2.6V).
  • the screen protection terminal 14 is arranged on the non-display part 12 and is located between the first test terminal 13a and the second test terminal 13b.
  • the screen protection terminal 14 is not connected to any circuit of the display screen 10, in other words, the screen protection terminal 14 is an empty pin, a floating pin or a pin without a network.
  • the screen protection terminal 14 is designed such that the potential difference between the first external terminal 21 or the second external terminal 22 is less than a second preset value, and the second preset value is less than or equal to the first default value.
  • the electric potential on the screen protection terminal 14 is between the electric potentials of the first external terminal 21 and the second external terminal 22.
  • the second preset value is less than 50%, 60%, 70%, or 80% of the first preset value.
  • the first test terminal 13a and the second test terminal 13b are correctly connected to the first external terminal 21 and the second external terminal 22 of the test device 20
  • the first external terminal 21 is connected to the first test terminal 13a
  • the second external terminal 22 is connected to the second test terminal 13b.
  • FIG. 2 is a schematic diagram of the connection relationship between the test terminal and the external terminal of the present application when they are connected in a misplaced manner.
  • the second external terminal 22 When the first test terminal 13a and the second test terminal 13b are connected to the first external terminal 21 and the second external terminal 22 of the test equipment 20 in a misaligned manner, as shown in FIG. 2, when they are misaligned to the left, the second external terminal 22 is connected to On the screen protection terminal 14, the second external terminal 22 will not be close to or in contact with the first test terminal 13a, and the second external terminal 22 will not form a potential difference with the first test terminal 13a, so the second external terminal 22 and the first No breakdown voltage will be generated between the test terminals 13a, the first test terminal 13a will not be damaged, and will not be easily corroded.
  • the screen protection terminal 14 is not connected to any circuit of the display screen 10, therefore, the second external terminal 22 will not damage the screen protection terminal 14 either.
  • the potential difference between the screen protection terminal 14 and the second external terminal 22 is smaller than the second preset value, and the second preset value is smaller than the first preset value, that is, smaller than the first preset value.
  • the potential difference between the external terminal 21 and the second external terminal 22 makes the second external terminal 22 and the screen protection terminal 14 insufficient to form a breakdown voltage, will not damage the screen protection terminal 14, or even if a breakdown voltage is formed , It is also less severe than the second external terminal 22 directly contacting the first test terminal 13a.
  • FIG. 3 is a schematic diagram of another connection relationship between the test terminal and the external terminal of the present application when they are connected in a wrong position.
  • first test terminal 13a and the second test terminal 13b are connected to the first external terminal 21 and the second external terminal 22 of the test equipment 20, as shown in FIG. 3, when they are shifted to the right, the first external terminal 21 is connected to On the screen protection terminal 14, the first external terminal 21 will not be close to or in contact with the second test terminal 13b, so no breakdown voltage will be generated between the first external terminal 21 and the second test terminal 13b, the second test terminal 13b Will not be injured, not easily corroded.
  • the screen protection terminal 14 is not connected to any circuit of the display screen. Therefore, the first external terminal 21 will not damage the screen protection terminal 14 either.
  • the potential difference between the screen protection terminal 14 and the first external terminal 21 is smaller than the second preset value, and the second preset value is smaller than the first preset value, that is, smaller than the first preset value.
  • the potential difference between the external terminal 21 and the second external terminal 22 makes the first external terminal 21 and the screen protection terminal 14 insufficient to form a breakdown voltage, will not damage the screen protection terminal 14, or even if a breakdown voltage is formed , It is also less severe than the first external terminal 21 directly contacting the second test terminal 13b.
  • the thickness of the screen protection terminal 14 is greater than the thickness of the first test terminal 13a or the second test terminal 13b;
  • the thickness of the screen protection terminal 14 is equal to the sum of the thickness of the first test terminal 13a and the first external terminal, or the thickness of the screen protection terminal 14 is equal to the sum of the thickness of the second test terminal 13b and the second external terminal.
  • the thickness of the screen protection terminal 14 is slightly larger than the thickness of the test terminal.
  • the second external terminal 22 is overlapped on the screen protection terminal 14 .
  • the screen protection terminal 14 is set higher than the test terminal, and can block the second external terminal 22 from further moving to the position of the first test terminal 13a after being misaligned, and can only return to the position of the second test terminal 13b for correct alignment connection .
  • the screen protection terminal 14 is made of a conductive material or an insulating material.
  • the screen protection terminal 14 when the screen protection terminal 14 is made of insulating material, the screen protection terminal 14 is a floating pin or no network pin; when the screen protection terminal 14 is made of a conductive material, the potential on the screen protection terminal 14 is designed
  • the potential difference between the second external terminal 22 and the second external terminal 22 is less than the second preset value, and the second preset value is less than the first preset value, that is, less than the potential difference between the first external terminal 21 and the second external terminal 22 , So that the second external terminal 22 and the screen protection terminal 14 are insufficient to form a breakdown voltage, and the screen protection terminal 14 will not be damaged.
  • the screen protection terminal 14 is made of insulating material, the screen protection terminal 14 and the non-display part are integrally formed.
  • the screen protection terminal 14 and the adjacent test terminals 13a, 13b are equally spaced.
  • the distance between the screen protection terminal 14 and the first test terminal 13a is equal to the distance between the screen protection terminal 14 and the second test terminal 13b.
  • the first test terminal 13a, the screen protection terminal 14, and the second test terminal 13b are sequentially arranged at intervals along the first direction x, the first test terminal 13a, the second test terminal 13b, and the screen protection terminal 14
  • the dimensions along the first direction x are equal. In other words, as shown in FIG. 1, the widths of the first test terminal 13a, the second test terminal 13b, and the screen protection terminal 14 are equal.
  • the first test terminal 13a, the screen protection terminal 14, and the second test terminal 13b are sequentially arranged at intervals along the first direction x, and the size of the first test terminal 13a along the first direction x is greater than or equal to The size of the screen protection terminal 14 along the first direction x, and the size of the second test terminal 13b along the first direction x is greater than or equal to the size of the screen protection terminal 14 along the first direction x. Therefore, the size occupied by the screen protection terminal 14 can be reduced, and the layout space on the non-display portion 12 can be saved.
  • the first test terminal 13a and the second test terminal 13b are the positive pole and the negative pole of the power supply of the display screen, respectively.
  • the first test terminal 13a is the positive pole of the power supply
  • the second test terminal 13b is the negative pole of the power supply.
  • the present application also provides a test device 20, wherein the test device 20 includes a test circuit 23 and a first external terminal 21 and a second external terminal 22 connected to the test circuit 23, the first external terminal 21 and the second external terminal 22 The potential difference is greater than the first preset value.
  • At least one test equipment protection terminal 25 is included between the first external terminal 21 and the second external terminal 22.
  • the test equipment protection terminal 25 is not connected to any circuit of the test equipment 20, or is designed to be connected to the first test terminal 13a of the display screen. Or the potential difference between the second test terminals 13b is less than the second preset value, and the second preset value is less than or equal to the first preset value.
  • the screen protection terminal 14 may not be provided on the display screen 10, but only between the first test terminal 13a and the second test terminal 13b. Set a certain distance between them, which is larger than the test terminal width of a display screen.
  • test equipment protection terminal 25 When the test equipment 20 and the display screen 10 are misaligned, for example, when the test equipment 20 is misaligned to the left relative to the display screen 10, the test equipment protection terminal 25 is in contact with or close to the first test terminal 13a, because the test equipment protection terminal 25 is The potential difference between the first test terminals 13a is less than the second preset value, so the terminal will not be damaged due to the excessive voltage difference, which can increase the fault tolerance of the test equipment 20 and the display screen 10 to a certain extent. rate. In the same way, when the test device 20 is misaligned to the right with respect to the display screen 10, the test device protection terminal 25 is in contact with or close to the second test terminal 13b, which can also provide protection.
  • the test equipment 20 includes a test circuit 23 and a first external terminal 21 and a second external terminal 22 connected to the test circuit 23, and the first external terminal 21 and the second external terminal 22 are relatively fixed.
  • the display screen is the display screen of any one of the above embodiments.
  • the first external terminal 21 is electrically connected to the first test terminal 13a
  • the second external terminal 22 is electrically connected to the second test terminal 13b.
  • the first external terminal 21 and the second external terminal 22 are separated by at least the width of one test terminal.
  • the gap corresponds to the position of the screen protection terminal 14.
  • first external terminal 21 and the second external terminal 22 are both fixed on the flexible circuit board a, and the first external terminal 21 and the second external terminal 22 are relatively fixed by the flexible circuit board a.
  • first external terminal 21 and the second external terminal 22 may be fixed on a wearable object, and the relative position of the first external terminal 21 and the second external terminal 22 is fixed when worn on a human body (for example, a finger).
  • the wear can be a finger cot.
  • test equipment protection terminal 25 is an empty pin, a floating pin or a non-network pin.
  • the test device 20 may further include a protection circuit 24.
  • the test circuit 23 is connected to the first external terminal 21 and the second external terminal 22 through the protection circuit 24, and the protection circuit 24 detects that the first When the voltage on the external terminal 21 or the second external terminal 22 is abnormal, the electrical connection between the first external terminal 21 and the second external terminal 22 and the test circuit is cut off.
  • the test device 20 may further include a buffer circuit 26.
  • the test circuit 23 is electrically connected to the first external terminal 21 and the second external terminal 22 through the buffer circuit 26.
  • the buffer circuit 26 is used to lower the first external terminal 21 and the second external terminal 22. The instantaneous voltage when the second external terminal 22 is connected to the test terminal 13a or 13b.
  • the display screen of the embodiment of the present application includes: a display part; a non-display part located on the periphery of the display part; a test terminal arranged on the non-display part, the test terminal includes at least a first test terminal and a second test terminal, and at least includes a first test terminal And the second test terminal are electrically connected to the display part, and at least include a first test terminal and a second test terminal for connecting the first external terminal and the second external terminal of the test equipment to test the display screen, the first external terminal and The potential difference of the second external terminal is greater than the first preset value; at least one screen protection terminal is arranged on the non-display part and is located between at least the first test terminal and the second test terminal.
  • any circuit connection of the display screen or is designed such that the potential difference between the first external terminal or the second external terminal is less than the second preset value, the second preset value is less than or equal to the first preset value, by the above method .
  • the first external terminal, the second external terminal and the test terminal of the display screen are misaligned during the corresponding connection process due to misoperation, the first external terminal or the second external terminal is connected to the screen protection terminal, and the screen
  • the protection terminal is not connected to any circuit of the display screen, or is designed so that the potential difference between the first external terminal or the second external terminal is smaller than the second preset value, which can reduce the misalignment of the first external terminal or the second external terminal Damage to the test terminal of the display.

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Abstract

一种显示屏（10）和测试设备（20），显示屏（10）包括：显示部（11）；位于显示部（11）外围的非显示部（12）；设置于非显示部（12）上的若干测试端子，测试端子至少包括两个测试端子（13a,13b），两个测试端子与显示部（11）电连接，并分别用于连接测试设备（20）的两个外部端子（21,22）以对显示屏（10）进行测试，两个外部端子（21,22）的电位差大于第一预设值；至少一个屏体保护端子（14），设置于非显示部（12）上，且位于两个测试端子（13a,13b）之间，屏体保护端子（14）不与显示屏（10）的电路连接，或屏体保护端子（14）与任一外部端子之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值。通过上述方式，能够降低错位连接时测试设备（20）的外部端子对显示屏（10）的测试端子的损伤。

Description

显示屏以及测试设备 【技术领域】
本申请涉及显示屏测试技术领域，特别是涉及一种显示屏以及测试设备。
【背景技术】
随着科学技术的发展，显示屏已日渐成为人们生活的必需品，是各大厂商争相研发的焦点。
屏体测试(Cell test，CT)是对邦定(bonding，芯片覆膜)前的单个显示屏的屏体进行点屏检测及老化测试的步骤，可以在投入模组前筛选出显示不良的屏体。
目前，在屏体测试时通常会由于对位错误导致显示屏上的测试端子被击伤，轻微的击伤会造成线路损伤，更严重的击伤在经过高温高湿环境后还会造成测试端子腐蚀。
【发明内容】
本申请主要解决的技术问题是提供一种显示屏以及测试设备，能够降低错位时第一外部端子或第二外部端子对显示屏的测试端子的损伤。
为解决上述技术问题，本申请实施例采用的一个技术方案是：提供一种显示屏，包括：
显示部；
非显示部，位于显示部的外围；
若干测试端子，设置于非显示部上，测试端子至少包括第一测试端子和第二测试端子，第一测试端子和第二测试端子与显示部电连接，第一测试端子和第二测试端子分别用于连接测试设备的第一外部端子和第二外部端子以对显示屏进行测试，第一外部端子和第二外部端子的电位差大于第一预设值；
至少一个屏体保护端子，设置于非显示部上，且位于第一测试端子和第二测试端子之间，屏体保护端子不与显示屏的电路连接，或者屏体 保护端子与第一外部端子或第二外部端子之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值。
为解决上述技术问题，本申请实施例采用的另一个技术方案是：提供一种测试设备，包括测试电路以及与测试电路连接的第一外部端子和第二外部端子，第一外部端子和第二外部端子的电位差大于第一预设值，
第一外部端子和第二外部端子之间包括至少一个测试设备保护端子，测试设备保护端子不与测试设备的电路连接，或者测试设备保护端子与显示屏的第一测试端子或第二测试端子之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值。
本申请实施例显示屏包括：显示部；位于显示部外围的非显示部；设置于非显示部上的若干测试端子，测试端子至少包括第一测试端子和第二测试端子，第一测试端子和第二测试端子与显示部电连接，第一测试端子和第二测试端子分别用于连接测试设备的第一外部端子和第二外部端子以对显示屏进行测试，第一外部端子和第二外部端子的电位差大于第一预设值；至少一个屏体保护端子，设置于非显示部上，且位于第一测试端子和第二测试端子之间，屏体保护端子不与显示屏的电路连接，或者屏体保护端子与第一外部端子或第二外部端子之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值，通过上述方式，在由于误操作导致第一外部端子、第二外部端子与测试端子在对应连接过程中发生错位连接时，第一外部端子或第二外部端子与屏体保护端子连接，而屏体保护端子不与显示屏的电路连接，或者屏体保护端子与第一外部端子或第二外部端子之间的电位差小于第二预设值，能够降低错位时第一外部端子或第二外部端子对显示屏的测试端子的损伤。
【附图说明】
图1是本申请实施例显示屏及测试设备的结构示意图；
图2是本申请测试端子与外部端子一种错位连接时的连接关系示意图；
图3是本申请测试端子与外部端子另一种错位连接时的连接关系示意图；
图4是本申请实施例测试设备的另一种结构示意图；
图5是本申请实施例测试设备的又一种结构示意图。
【具体实施方式】
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。
请参阅图1，图1是本申请实施例显示屏及测试设备的结构示意图。
在本实施例中，显示屏10包括显示部11、非显示部12、若干测试端子和屏体保护端子14。
显示部11上设置有显示单元阵列，显示单元阵列包括阵列排布于显示部11上的多个显示单元。
非显示部12位于显示部11的外围。
测试端子至少包括第一测试端子13a和第二测试端子13b。
第一测试端子13a和第二测试端子13b均设置于非显示部12上，第一测试端子13a和第二测试端子13b均与显示部11电连接。
在正确的测试连接方式下，第一测试端子13a和第二测试端子13b分别用于连接测试设备20的第一外部端子21和第二外部端子22以对显示屏10进行测试。例如，在测试时，第一测试端子13a用于与测试设备20的第一外部端子21电连接，第二测试端子13b用于与测试设备20的第二外部端子22电连接。
第一外部端子21和第二外部端子22的电位差大于第一预设值。
例如，第一外部端子21为电源正极，第二外部端子22为电源负极。在一种实施例中，第一外部端子21上的电位为ELVDD(4.2V)，第二外部端子22上的电位为ELVSS(-2.6V)。
屏体保护端子14设置于非显示部12上，且位于第一测试端子13a和第二测试端子13b之间。
在一种实施例中，屏体保护端子14不与显示屏10的任何电路连接， 换言之，屏体保护端子14为空引脚、悬空引脚或者无网络引脚。
在另一种实施例中，屏体保护端子14被设计成与第一外部端子21或第二外部端子22之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值。例如，屏体保护端子14上的电位大小介于第一外部端子21和第二外部端子22的电位之间。
可选地，第二预设值小于第一预设值的50％、60％、70％或80％。
如图1所示，在第一测试端子13a和第二测试端子13b与测试设备20的第一外部端子21和第二外部端子22正确连接时，第一外部端子21连接第一测试端子13a，第二外部端子22连接第二测试端子13b。
请结合参阅图2，图2是本申请测试端子与外部端子一种错位连接时的连接关系示意图。
在第一测试端子13a和第二测试端子13b与测试设备20的第一外部端子21和第二外部端子22错位连接时，如图2所示，向左错位时，第二外部端子22连接在屏体保护端子14上，第二外部端子22不会与第一测试端子13a靠近或者接触，第二外部端子22不会与第一测试端子13a形成电位差，因此第二外部端子22与第一测试端子13a之间不会产生击穿电压，第一测试端子13a不会被击伤，不容易被腐蚀。
在一种情况下，屏体保护端子14不与显示屏10的任何电路连接，因此，第二外部端子22也不会击伤屏体保护端子14。
在另一种情况下，屏体保护端子14被设计成与第二外部端子22之间的电位差小于第二预设值，而第二预设值小于第一预设值，即小于第一外部端子21和第二外部端子22之间的电位差，使得第二外部端子22与屏体保护端子14不足以形成击穿电压，不会击伤屏体保护端子14，或者即使形成击穿电压，也会比第二外部端子22直接接触第一测试端子13a的击伤程度要轻。
请结合参阅图3，图3是本申请测试端子与外部端子另一种错位连接时的连接关系示意图。
在第一测试端子13a和第二测试端子13b与测试设备20的第一外部端子21和第二外部端子22错位连接时，如图3所示，向右错位时，第 一外部端子21连接在屏体保护端子14上，第一外部端子21不会与第二测试端子13b靠近或者接触，因此第一外部端子21与第二测试端子13b之间不会产生击穿电压，第二测试端子13b不会被击伤，不容易被腐蚀。
在一种情况下，屏体保护端子14不与显示屏的任何电路连接，因此，第一外部端子21也不会击伤屏体保护端子14。
在另一种情况下，屏体保护端子14被设计成与第一外部端子21之间的电位差小于第二预设值，而第二预设值小于第一预设值，即小于第一外部端子21和第二外部端子22之间的电位差，使得第一外部端子21与屏体保护端子14不足以形成击穿电压，不会击伤屏体保护端子14，或者即使形成击穿电压，也会比第一外部端子21直接接触第二测试端子13b的击伤程度要轻。
可选地，沿垂直于显示屏的方向，屏体保护端子14的厚度大于第一测试端子13a或第二测试端子13b的厚度；
优选地，屏体保护端子14的厚度等于第一测试端子13a与第一外部端子的厚度之和，或屏体保护端子14的厚度等于第二测试端子13b与第二外部端子的厚度之和。
在一种实施例中，屏体保护端子14的厚度略大于测试端子的厚度，当测试端子与外部端子错位时，如图2所示，第二外部端子22搭接在屏体保护端子14上，屏体保护端子14高出测试端子设置，在错位后能够阻挡第二外部端子22进一步向第一测试端子13a的位置移动，只能回归到第二测试端子13b的位置进行正确的对位连接。
可选地，屏体保护端子14为导电材质或者绝缘材质。
具体地，当屏体保护端子14为绝缘材质时，屏体保护端子14为悬空引脚或者无网络引脚；当屏体保护端子14为导电材质时，屏体保护端子14上的电位被设计成与第二外部端子22之间的电位差小于第二预设值，而第二预设值小于第一预设值，即小于第一外部端子21和第二外部端子22之间的电位差，使得第二外部端子22与屏体保护端子14不足以形成击穿电压，不会击伤屏体保护端子14。
可选地，当屏体保护端子14为绝缘材质时，屏体保护端子14与非显示部一体成型。
可选地，屏体保护端子14与相邻的测试端子13a，13b间隔相等。例如，屏体保护端子14与第一测试端子13a的间距等于屏体保护端子14与第二测试端子13b的间距。
在一种实施例中，第一测试端子13a、屏体保护端子14、第二测试端子13b依次沿第一方向x间隔设置，第一测试端子13a、第二测试端子13b和屏体保护端子14沿第一方向x的尺寸相等。换言之，如图1所示，第一测试端子13a、第二测试端子13b和屏体保护端子14的宽度相等。
在另一种实施例中，第一测试端子13a、屏体保护端子14、第二测试端子13b依次沿第一方向x间隔排布，第一测试端子13a沿第一方向x的尺寸大于或等于屏体保护端子14沿第一方向x的尺寸，且第二测试端子13b沿第一方向x的尺寸大于或等于屏体保护端子14沿第一方向x的尺寸。从而可以减小屏体保护端子14占用的尺寸，节约非显示部12上的布局空间。
可选地，第一测试端子13a和第二测试端子13b分别为显示屏的电源正极和电源负极。例如，第一测试端子13a为电源正极，第二测试端子13b为电源负极。
本申请还提供一种测试设备20，其中，该测试设备20包括测试电路23以及与测试电路23连接的第一外部端子21和第二外部端子22，第一外部端子21和第二外部端子22的电位差大于第一预设值。
第一外部端子21和第二外部端子22之间包括至少一个测试设备保护端子25，测试设备保护端子25不与测试设备20的任何电路连接，或者被设计成与显示屏的第一测试端子13a或第二测试端子13b之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值。
在一种实施方式中，在测试设备20上设置测试设备保护端子25的情况下，显示屏10上可以不必设置屏体保护端子14，而只是在第一测试端子13a和第二测试端子13b之间设置一定的间距，该间距大于一个 显示屏的测试端子宽度。在测试设备20与显示屏10发生错位连接时，例如，测试设备20相对于显示屏10向左错位时，测试设备保护端子25与第一测试端子13a接触或者靠近，由于测试设备保护端子25与第一测试端子13a之间的电位差小于第二预设值，因此不会由于压差过大产生击伤端子的情况，一定程度上可以增大测试设备20与显示屏10对位连接的容错率。同理，在测试设备20相对于显示屏10向右错位时，测试设备保护端子25与第二测试端子13b接触或者靠近，同样可以起到保护作用。通过上述方式，即便发生一定程度错位连接也不会出现第一测试端子13a与第二外部端子22接触或者第二测试端子13b与第一外部端子21接触的情况，即不会出现高电位差的两个端子直接相连的情况，可以提高对位连接的容错率，避免端子被击伤。
在本实施例中，测试设备20包括测试电路23及与测试电路23连接的第一外部端子21和第二外部端子22，第一外部端子21和第二外部端子22相对固定。
例如，显示屏是上述任意一实施例的显示屏。在正常测试时，第一外部端子21与第一测试端子13a电连接，第二外部端子22与第二测试端子13b电连接。第一外部端子21和第二外部端子22至少间隔一个测试端子的宽度，外部端子与测试端子正常连接时，该间隔处与屏体保护端子14的位置对应。
在一种实施例中，第一外部端子21和第二外部端子22均固定于柔性电路板a上，第一外部端子21和第二外部端子22通过柔性电路板a相对固定。在另一实施例中，第一外部端子21和第二外部端子22可固定于穿戴物上，在穿戴于人体(例如手指)时第一外部端子21和第二外部端子22相对位置固定。例如穿戴物可以是手指套。
可选地，测试设备保护端子25为空引脚、悬空引脚或者无网络引脚。
请参阅图4，图4是本申请实施例测试设备的另一种结构示意图。可选地，在一种实施例中，测试设备20可以进一步包括保护电路24，测试电路23通过保护电路24连接的第一外部端子21和第二外部端子 22，保护电路24在检测到第一外部端子21或者第二外部端子22上的电压异常时，切断第一外部端子21和第二外部端子22与测试电路之间的电连接。
请参阅图5，图5是本申请实施例测试设备的又一种结构示意图。在本实施例中，测试设备20可以进一步包括缓冲电路26，测试电路23通过缓冲电路26与第一外部端子21和第二外部端子22电连接，缓冲电路26用于降低第一外部端子21和第二外部端子22连接测试端子13a或者13b时的瞬时电压。
本申请实施例显示屏包括：显示部；位于显示部外围的非显示部；设置于非显示部上的测试端子，测试端子至少包括第一测试端子和第二测试端子，至少包括第一测试端子和第二测试端子与显示部电连接，至少包括第一测试端子和第二测试端子分别用于连接测试设备的第一外部端子和第二外部端子以对显示屏进行测试，第一外部端子和第二外部端子的电位差大于第一预设值；至少一个屏体保护端子，设置于非显示部上，且位于至少包括第一测试端子和第二测试端子之间，屏体保护端子不与显示屏的任何电路连接，或者被设计成与第一外部端子或第二外部端子之间的电位差小于第二预设值，第二预设值小于或者等于第一预设值，通过上述方式，在由于误操作导致第一外部端子、第二外部端子与显示屏的测试端子在对应连接过程中发生错位连接时，第一外部端子或第二外部端子与屏体保护端子连接，而屏体保护端子不与显示屏的任何电路连接，或者被设计成与第一外部端子或第二外部端子之间的电位差小于第二预设值，能够降低错位时第一外部端子或第二外部端子对显示屏的测试端子的损伤。
以上所述仅为本申请的实施方式，并非因此限制本申请的专利范围，凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (18)

  1. 一种显示屏，包括：
    显示部；
    非显示部，位于所述显示部的外围；
    若干测试端子，设置于所述非显示部上，所述测试端子至少包括第一测试端子和第二测试端子，所述第一测试端子和所述第二测试端子与所述显示部电连接，所述第一测试端子和所述第二测试端子分别用于连接测试设备的第一外部端子和第二外部端子以对所述显示屏进行测试，所述第一外部端子和所述第二外部端子的电位差大于第一预设值；
    至少一个屏体保护端子，设置于所述非显示部上，且位于所述第一测试端子和所述第二测试端子之间，所述屏体保护端子不与所述显示屏的电路连接，或者所述屏体保护端子与所述第一外部端子或所述第二外部端子之间的电位差小于第二预设值，所述第二预设值小于或者等于所述第一预设值。
  2. 根据权利要求1所述的显示屏，其中，沿垂直于所述显示屏的方向，所述屏体保护端子的厚度大于所述测试端子的厚度。
  3. 根据权利要求1所述的显示屏，其中，沿垂直于所述显示屏的方向，所述屏体保护端子的厚度等于所述测试端子与所述第一外部端子的厚度之和。
  4. 根据权利要求1所述的显示屏，其中，沿垂直于所述显示屏的方向，所述屏体保护端子的厚度等于所述测试端子与所述第二外部端子的厚度之和。
  5. 根据权利要求1所述的显示屏，其中，所述屏体保护端子为导电材质或者绝缘材质。
  6. 根据权利要求1所述的显示屏，其中，若干所述测试端子等间距设置。
  7. 根据权利要求1所述的显示屏，其中，所述屏体保护端子与相邻的所述测试端子间隔相等。
  8. 根据权利要求1所述的显示屏，其中，沿所述测试端子的排布方向，所述测试端子的尺寸大于或等于所述屏体保护端子的尺寸。
  9. 根据权利要求1所述的显示屏，其中，所述第一测试端子和所述第二测试端子分别电连接至所述显示屏的电源正极和电源负极。
  10. 根据权利要求1所述的显示屏，其中，所述屏体保护端子为空引脚、悬空引脚或者无网络引脚。
  11. 根据权利要求1所述的显示屏，其中，所述屏体保护端子为绝缘材质，所述屏体保护端子与所述非显示部一体成型。
  12. 一种测试设备，包括测试电路以及与所述测试电路连接的第一外部端子和第二外部端子，所述第一外部端子和所述第二外部端子的电位差大于第一预设值，
    所述第一外部端子和所述第二外部端子之间包括至少一个测试设备保护端子，所述测试设备保护端子不与所述测试设备的电路连接，或者所述测试设备保护端子与显示屏的测试端子之间的电位差小于所述第二预设值，所述第二预设值小于或者等于所述第一预设值。
  13. 根据权利要求12所述的测试设备，其中，沿垂直于所述显示屏的方向，所述测试设备保护端子的厚度大于所述第一外部端子或所述第二外部端子的厚度。
  14. 根据权利要求12所述的测试设备，其中，沿垂直于所述显示屏的方向，所述测试设备保护端子的厚度等于显示屏的测试端子与所述第一外部端子的厚度之和。
  15. 根据权利要求12所述的测试设备，其中，沿垂直于所述显示屏的方向，所述测试设备保护端子的厚度等于显示屏的测试端子与所述第二外部端子的厚度之和。
  16. 根据权利要求12所述的测试设备，其中，所述第一外部端子和所述第二外部端子均固定于柔性电路板上，所述第一外部端子和所述第二外部端子通过所述柔性电路板相对固定。
  17. 根据权利要求12所述的测试设备，其中，所述测试设备进一步包括保护电路，所述测试电路通过所述保护电路连接的所述第一外部 端子和所述第二外部端子，所述保护电路用于在检测到所述第一外部端子或者所述第二外部端子上的电压异常时，切断所述第一外部端子和所述第二外部端子与所述测试电路之间的电连接。
  18. 根据权利要求12所述的测试设备，其中，所述测试设备进一步包括缓冲电路，所述测试电路通过所述缓冲电路与所述第一外部端子和所述第二外部端子电连接，所述缓冲电路用于降低所述第一外部端子和所述第二外部端子连接显示屏的测试端子时的瞬时电压。
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