Probe structure for light leakage test of display screen

Abstract

The utility model discloses a probe structure for a display screen light leakage test, which comprises a display screen and a light detection assembly arranged on the display screen and used for detecting the light leakage degree, and the light detection assembly comprises an accommodating plate and a plurality of light detection lenses arranged on the accommodating plate, the detection direction of the plurality of optical measurement lenses faces the surface of the display screen, the plurality of optical measurement lenses are connected with an optical measurer, and the optical measurer is used for measuring light conditions at different positions on the display screen. The probe structure has the effect that the light leakage degree of the display screen can be known by detecting the brightness conditions of different positions on the display screen, so that the light leakage degree of the display screen can be known in real time.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a probe structure for testing light leakage of a display screen. Background Art

[0002] For a liquid crystal display screen, its light is provided by a backlight. The light provided by the backlight is emitted by backlight lamps at the bottom of the backlight, and after being guided, scattered, diffused, etc. by optical film materials, a surface light source is formed and then enters the liquid crystal display screen. Since the ultimate source of light is multiple LED lamps at the bottom of the backlight, objectively, there is an uneven situation of light entering, generally referred to as light leakage or uneven brightness and darkness. In the prior art, there is no device for measuring the light leakage degree of a display screen, so it is difficult to judge the light leakage situation of the display screen. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a probe structure for testing light leakage of a display screen.

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

[0005] A probe structure for testing light leakage of a display screen includes: a display screen and a light measurement component arranged on the display screen for detecting the light leakage degree. The light measurement component includes a placement board and a plurality of light measurement lenses arranged on the placement board. The detection directions of the plurality of light measurement lenses face the surface of the display screen. The plurality of light measurement lenses are connected to an optical measuring device, and the optical measuring device is used to measure the light brightness conditions at different positions on the display screen.

[0006] In one implementation manner, the placement board is placed along the width direction of the display screen, and the placement board is placed at a position close to the bottom of the display screen.

[0007] In one implementation manner, the placement board is arranged in a C shape, the length of the placement board is longer than the width of the display screen, one side of the placement board is recessed inward, and the recess of the placement board faces the surface of the display screen.

[0008] In one implementation manner, the plurality of light measurement lenses are all located at the bottom position of the placement board. The plurality of light measurement lenses are equidistantly distributed along the width direction of the upper surface of the display screen, and the lengths of the plurality of light measurement lenses are adapted to the width of the upper surface of the display screen.

[0009] In one implementation manner, the side of the placement board facing the display screen is adhesively fixed to the surface of the display screen.

[0010] In one implementation, each of the plurality of optical measurement lenses is connected to a circuit. The circuit is connected to one end of the optical measurement lens away from the display screen. The circuit is located within the accommodation board, and the circuits of the plurality of optical measurement lenses pass through the accommodation board and are connected to the optical measuring device.

[0011] In one implementation, the circuits of the plurality of optical measurement lenses form a wire harness and are connected to the optical measuring device.

[0012] In one implementation, a plurality of baffles are provided within the accommodation board. The plurality of baffles are arranged along the length direction of the accommodation board. The plurality of baffles are used to separate the plurality of optical measurement lenses, and a baffle is provided on each of the left and right sides of each optical measurement lens.

[0013] In one implementation, the length of the baffle is the same as the width of the accommodation board. The plurality of baffles divide the space within the accommodation board into a plurality of optical measurement compartments, and each optical measurement compartment corresponds to one optical measurement lens.

[0014] In one implementation, the optical measuring device is connected to a host computer. The host computer is configured to receive the brightness values detected by the plurality of optical measurement lenses on the optical measuring device and calculate the light leakage of the display screen.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] A probe structure for testing light leakage of a display screen according to the present utility model detects the brightness at different positions on the display screen by providing a plurality of optical measurement probes, and then calculates the light leakage of the display screen through an optical measuring device and a host computer to judge the light leakage of the display screen in real time and timely, enabling the customer to more intuitively know the degree of light leakage of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below.

[0018] Figure 1 FIG. is a schematic structural diagram of a probe structure for testing light leakage of a display screen provided by the present utility model;

[0019] Figure 2 FIG. is a schematic structural diagram of an accommodation board in a probe structure for testing light leakage of a display screen provided by the present utility model;

[0020] Figure 3 FIG. is a schematic structural diagram of the accommodation board in a probe structure for testing light leakage of a display screen provided by the present utility model from another perspective.

[0021] Description of the drawings: 10, display screen; 20, receiving board; 21, optical measurement compartment; 30, optical measurement lens; 40, circuit; 50, optical measuring device; 60, wire harness; 70, baffle plate. Detailed implementation manners

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0023] A probe structure for detecting light leakage of a display screen, referring to Figure 1 , includes a display screen 10 and an optical measurement component arranged on the display screen 10 for detecting the light leakage amount. The optical measurement component includes a receiving board 20 and a plurality of optical measurement lenses 30 arranged on the receiving board 20. The receiving board 20 is placed along the width direction of the display screen 10, and the receiving board 20 is located at a position close to the lower bottom of the display screen 10. Since the light source of the display screen 10 comes from the backlight, and the light provided by the backlight is emitted from the backlight lamp at the bottom of the backlight, the receiving board 20 is placed at a position close to the bottom of the display screen 10 to better detect the light leakage situation.

[0024] Referring to Figure 1 and Figure 2 , the receiving board 20 is arranged in a C shape. The length of the receiving board 20 is longer than the width of the display screen 10. One side of the receiving board 20 is recessed inward to form a C shape, and the recessed portion of the receiving board 20 faces the surface of the display screen 10. A plurality of optical measurement lenses 30 are all located at the bottom position of the receiving board 20, and the detection directions of the plurality of optical measurement lenses 30 face the surface of the display screen 10. The plurality of optical measurement lenses 30 are equidistantly distributed along the length direction of the receiving board 20, and the plurality of optical measurement lenses 30 are equidistantly distributed along the width direction of the upper surface of the display screen 10. The length of the plurality of optical measurement lenses 30 is adapted to the width of the upper surface of the display screen 10. The plurality of optical measurement lenses 30 are used to detect the light brightness at different positions on the upper surface of the display screen 10, so as to know the light leakage situation of the display screen 10 by detecting the light brightness at different positions.

[0025] Further, referring to Figure 1 , the side of the receiving board 20 facing the display screen 10 is fixed to the surface of the display screen 10 by pasting, so that the receiving board 20 will not shift during the test and affect the test result.

[0026] Referring to Figure 1 and Figure 2 , a plurality of optical measurement lenses 30 are all connected with a circuit 40. The circuit 40 is connected to the end of the optical measurement lens 30 far from the display screen 10. The circuit 40 is located inside the receiving board 20. The circuits 40 of the plurality of optical measurement lenses 30 pass out of the receiving board 20 and are connected to an optical measuring device 50.

[0027] Further, referring to Figure 1 and Figure 2, the circuits 40 of multiple optical measurement lenses 30 form a wire harness 60 and are connected to the optical measuring device 50, so that the multiple optical measurement lenses 30 are electrically connected to the optical measuring device 50, and the brightness data detected by the multiple optical measurement lenses 30 are transmitted to the optical measuring device 50 for measurement.

[0028] Further, referring to Figure 3 , a plurality of baffles 70 are provided in the accommodation plate 20. The plurality of baffles 70 are arranged along the length direction of the accommodation plate 20. The plurality of baffles 70 are used to separate the multiple optical measurement lenses 30. Baffles 70 are provided on both the left and right sides of each optical measurement lens 30 and are separated by the baffles 70 on both the left and right sides to form an independent optical measurement compartment 21. The optical measurement lens 30 on each optical measurement compartment 21 can perform optical tests on the corresponding position on the display screen 10.

[0029] Referring to Figure 3 , the length of the baffle 70 is the same as the width of the accommodation plate 20. The plurality of baffles 70 separate the space in the accommodation plate 20 into a plurality of optical measurement compartments 21, and each optical measurement compartment 21 corresponds to an optical measurement lens 30.

[0030] Referring to Figure 1 , the brightness values detected by the multiple optical measurement lenses 30 are respectively L1 to Ln, and the maximum and minimum values in the measured values are taken as Lmax and Lmin. By setting the light leakage, it is used to digitally represent the light leakage degree of the display screen 10 product. The calculation formula for the light leakage is: light leakage diff value = (Lmax - Lmin) / Lmax. The customer determines the acceptable light leakage program standard as k according to the actual effect of the product (assuming that the acceptable light leakage standard for the customer is 70%, that is, k = 70%), that is, diff ≥ k (70%), that is, it is determined that the light leakage degree of the display screen 10 is normal.

[0031] Referring to Figure 1 , the optical measuring device 50 is connected to a host computer. The host computer is used to receive the brightness values detected by the multiple optical measurement lenses 30 on the optical measuring device 50 and calculate the light leakage of the display screen 10, so as to judge the light leakage of the display screen 10 in real time and in a timely manner, enabling the customer to more intuitively know the light leakage degree of the display screen 10.

[0032] This probe structure detects the brightness at different positions on the display screen 10 by setting multiple optical measurement probes, and then calculates the light leakage of the display screen 10 through the optical measuring device 50 and the host computer, so as to judge the light leakage of the display screen 10 in real time and in a timely manner, enabling the customer to more intuitively know the light leakage degree of the display screen 10.

[0033] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A probe structure for display screen light leakage testing, characterized in that: include: A display screen (10) and a light measuring component arranged on the display screen (10) for detecting light leakage, the light measuring component comprising a receiving plate (20) and a plurality of light measuring lenses (30) arranged on the receiving plate (20), the detection directions of the plurality of light measuring lenses (30) facing the surface of the display screen (10), the plurality of light measuring lenses (30) being connected to an optical measuring device (50), the optical measuring device (50) being used to measure light conditions at different positions on the display screen (10).

2. The probe structure for display screen light leakage testing according to claim 1, characterized in that: The accommodating plate (20) is placed along the width direction of the display screen (10), and the accommodating plate (20) is placed at a position close to the bottom of the display screen (10).

3. The probe structure for display screen light leakage testing according to claim 2, characterized in that: The accommodating plate (20) is arranged in a C shape, the length of the accommodating plate (20) is longer than the width of the display screen (10), one side of the accommodating plate (20) is arranged to be recessed inwards, and the recessed part of the accommodating plate (20) faces the surface of the display screen (10).

4. The probe structure for display screen light leakage testing according to claim 3, characterized in that: The plurality of light measuring lenses (30) are all located at the bottom of the accommodating plate (20), and the plurality of light measuring lenses (30) are distributed at equal distances along the width direction of the upper surface of the display screen (10), and the lengths of the plurality of light measuring lenses (30) are adapted to the width of the upper surface of the display screen (10).

5. The probe structure for display screen light leakage testing according to claim 4, characterized in that: The side of the accommodating plate (20) facing the display screen (10) is glued and fixed to the surface of the display screen (10).

6. The probe structure for display screen light leakage testing according to claim 5, characterized in that: The plurality of light measuring lenses (30) are all connected to a circuit (40), the circuit (40) being connected to an end of the light measuring lens (30) away from the display screen (10), the circuit (40) being located in the receiving plate (20), and the circuits (40) of the plurality of light measuring lenses (30) passing through the receiving plate (20) to be connected to the optical measuring device (50).

7. The probe structure for display screen light leakage testing according to claim 6, characterized in that: The lines (40) of the plurality of optical measuring lenses (30) form a wiring harness (60) which is connected to the optical measuring device (50).

8. The probe structure for display screen light leakage testing according to claim 6, characterized in that: A plurality of baffles (70) are arranged in the accommodating plate (20), and the plurality of baffles (70) are arranged along the length direction of the accommodating plate (20). The plurality of baffles (70) are used to separate the plurality of optical measuring lenses (30), and each of the optical measuring lenses (30) is provided with baffles (70) on both sides thereof.

9. The probe structure for display screen light leakage testing according to claim 8, characterized in that: The length of the baffle (70) is the same as the width of the accommodating plate (20); a plurality of the baffles (70) separate the space inside the accommodating plate (20) into a plurality of light measuring compartments (21); each of the light measuring compartments (21) corresponds to one of the light measuring lenses (30).

10. The probe structure for display screen light leakage testing according to claim 7, characterized in that: The optical measuring device (50) is connected to a host computer, and the host computer is used to receive brightness values ​​detected by the plurality of light measuring lenses (30) on the optical measuring device (50) and calculate the light leakage of the display screen (10).

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