CN210572027U

CN210572027U - OLED screen polarization detection device

Info

Publication number: CN210572027U
Application number: CN201921033521.1U
Authority: CN
Inventors: 罗通明; 王宁; 韦鑫鑫; 周洪名; 黄永
Original assignee: Dongguan Chuangshi Automation Technology Co ltd
Current assignee: Dongguan Chuangshi Automation Technology Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2020-05-19
Anticipated expiration: 2029-07-03

Abstract

The utility model discloses a OLED screen polarisation detection device, be provided with luminescent plate, polarisation device, 45 minutes spectroscopes, structure grating and the observation lens of setting on the shell body upper cover plate in shell body and the shell body. The observation lens is coated with an antireflection film, the luminous plate is composed of a fixed plate and luminous beads, and the fixed plate is a glass fiber plate. The polarizing device comprises a light diffuse reflection plate, a first prismatic light collecting module, a second prismatic light collecting module and a polarizing plate. The light diffuse reflection plate is an acrylic light diffusion plate, and the polarizing plate is an acrylic polarizing plate. The 45-degree spectroscope consists of a flat transparent glass sheet, a 50:50 light splitting film and an antireflection film. The 50:50 light splitting film is covered on one side, facing the polarizing device, of the flat transparent glass sheet, and the antireflection film is covered on one side, facing the observation lens, of the flat transparent glass sheet.

Description

OLED screen polarization detection device

Technical Field

OLED screen polarisation detection device relates to the optical detection field, in particular to check out test set that is used for OLED screen to detect.

Background

The OLED screen, i.e., an organic light emitting display, is called as a third generation display technology and is known as a "illusion display". The OLED is thinner, low in energy consumption, high in brightness, good in luminous efficiency, capable of displaying pure black, and capable of being bent, and is a preferred material for display screens of curved screen televisions and mobile phones at present.

The main factors influencing the quality of the OLED display screen are point and line defects, and the difficulty of manual detection of the OLED display screen is increased along with the continuous improvement of the resolution of the display screen. The existing detection method is human eyes, has limitations, is very difficult to detect slight defects such as tiny bumps, pits, water ripples and the like, is detected by a direct human eye observation method, and has influence on human eye vision by long-time working light.

The conventional illumination light source cannot shoot the effect of high contrast, is low in detection stability, and cannot realize large-area and large-view quick detection. Aiming at the pollution of tiny particles in the manufacturing process, the defects are hidden in OLED pixels, are small in size, usually dozens of micrometers, similar in gray scale and background, low in contrast and uneven in light emitting brightness, and are difficult to find by manual detection.

Disclosure of Invention

In order to solve the problem, the utility model provides a polarized light detection device is shielded to OLED.

The polarized light detection device utilizes coaxial natural light and polarized light to simultaneously irradiate the OLED screen, the polarized light penetrates through the OLED screen glass substrate under the action of the structural grating plate and is projected to an organic material coating inside the OLED screen, a grating image of a defective part of the organic material coating can generate geometric deformation, the geometric deformation can be reflected to human eyes or a detection imaging device through the natural light, and the purpose of detecting the defects of the OLED screen is realized through the human eyes or the detection imaging device to process and analyze the geometric deformation.

The structural grating plate is a metal plate, and strip-shaped grooves are uniformly formed in the structural grating plate and penetrate through the upper surface and the lower surface of the structural grating plate.

OLED screen polarisation detection device, be provided with luminescent plate, polarisation device, 45 minutes spectroscopes, structure grating and the observation lens of setting on the shell body upper cover plate in shell body and the shell body.

Specifically, the light-emitting plate is composed of a fixing plate and light-emitting beads, and preferably, the fixing plate is a glass fiber plate.

Specifically, the polarization device comprises a light diffuse reflection plate, a first prismatic light collecting module, a second prismatic light collecting module and a polarization plate. Preferably, the light diffusing reflection plate is an acrylic light diffusion plate, and the polarizing plate is an acrylic polarizing plate.

Specifically, the 45-degree beam splitter consists of a flat transparent glass sheet, a light splitting film and an antireflection film. The light splitting film is coated on one side, facing the polarizing device, of the flat transparent glass sheet, and the antireflection film is coated on one side, facing the observation lens, of the flat transparent glass sheet. Preferably, the light splitting film is a 50:50 light splitting film.

Specifically, the structure grating board is a metal board, and strip-shaped grooves are uniformly formed in the structure grating board and penetrate through the upper surface and the lower surface of the structure grating board.

In order to enhance the transmittance of the observation lens and improve the recognition effect of human eyes or a detection imaging device, the observation lens is coated with an antireflection film.

In order to avoid the damage of the heat generated after the power-on of the light-emitting plate to the internal structure of the detection device and influence the detection effect of the OLED screen, the detection device further comprises a heat dissipation structure.

The utility model provides an its profitable effect of OLED screen polarisation detection device is, when detecting the great OLED screen of film width of cloth, can move the sub-regional detection of OLED screen on moving platform with detection device setting, does not receive the influence of OLED screen width of cloth size during the detection, and detectable OLED screen wide range. The polarized light is used for detection, the efficiency is higher, the detection effect is more stable, the misjudgment rate is low, and the detection personnel can not be hurt by naked eyes.

Drawings

FIG. 1 is the utility model discloses OLED screen polarisation detects device three-dimensional axial schematic diagram

FIG. 2 is the utility model discloses OLED screen polarisation detects device three-dimensional decomposition schematic diagram

FIG. 3 is the three-dimensional schematic diagram of the OLED screen polarization detection device with its light-emitting plate and structure grating

FIG. 4 is the utility model discloses its longitudinal section two-dimensional structure sketch map of OLED screen polarisation detection device

FIG. 5 shows the schematic view of the optical detection flow of the coaxial structure optical detection method of the OLED panel polarized light detection device

FIG. 6 is the utility model discloses its coaxial configuration optical detection method of OLED screen polarisation detection device-detect cell-phone OLED screen normal polarized light structure grating image sketch map

Fig. 7 is the utility model discloses its coaxial configuration optical detection method of OLED screen polarisation detection device-detect cell-phone OLED screen polarized light structure grating image deformation schematic diagram.

Detailed Description

The following explains the OLED screen polarization detection device in detail with reference to the drawings.

OLED screen polarisation detection device, its concrete structure is shown as figure 1 fig. 2 detect

The device comprises an outer shell 1, wherein the outer shell 1 is composed of an upper cover plate 1a, a front end plate 1b, a left end plate 1c and a right end plate 1 d. The light-emitting plate 4, the polarizing device 5, the 45-degree beam splitter 6, the structure grating 8 and the observation lens 7 arranged on the upper cover plate 1a of the outer shell 1 are arranged in the outer shell 1.

Preferably, in order to eliminate the reflected light and stray light on the surface of the observation lens 7, enhance the light transmission effect during detection,

the observation lens 7 is covered with an antireflection film.

Specifically, the light emitting plate 4 is composed of a fixing plate 4a and light emitting beads 4b arranged in an array on the inner side of the fixing plate 4a,

preferably, the fixing plate 4a is a glass fiber plate.

Specifically, the polarizing device 5 includes a light diffusing reflective plate 5a, a first prismatic light collecting module 5b, a second prismatic light collecting module 5c, and a polarizing plate 5 d.

Preferably, the light-diffusing reflective plate 5a is an acrylic light-diffusing plate, and the polarizing plate 5d is an acrylic polarizing plate.

Specifically, the 45-degree beam splitter 6 is composed of a flat transparent glass sheet 6a, a beam splitting film 6b and an antireflection film 6 c.

The light splitting film 6b is coated on one side of the flat transparent glass sheet 6a facing the polarizer 5, and the antireflection film 6c is coated on one side of the flat transparent glass sheet 6a facing the observation lens 7. Preferably, the spectroscopic film 6b is a 50:50 spectroscopic film.

Specifically, the structure grating plate 8 is a metal plate, the structure grating plate 8 is uniformly provided with strip-shaped grooves 8a, and the strip-shaped grooves 8a are arranged through the upper surface and the lower surface of the structure grating plate 8.

In order to avoid the heat generated after the luminous plate 4 is electrified from damaging the internal structure of the detection device and influencing the OLED screen

The detection device also comprises a heat dissipation structure.

Specifically, the heat dissipation structure comprises a heat dissipation device 2 disposed outside the light emitting panel 4 and a housing disposed outside the light emitting panel

Exhaust fan 3a and induced fan 3b on body 1 left side end plate 1c and the right side end plate 1d, heat abstractor 2 is including power connection 2a, radiator fan 2b and fin 2 c.

The utility model discloses a polarized light detection device of OLED screen, its concrete detection method is shown in FIG. 5;

1) fig. 5 shows that a point light source emitted from a common light source is changed into a surface light source through a light diffusion reflection plate, so that glare or facula is eliminated and light is homogenized.

2) The light emitted from the surface light source shown in fig. 5 is diffused and scattered in each angular direction, and is collected to the same axial angle through two prismatic light collecting films perpendicular to each other, and is converted into light with strong directivity and axial brightness.

3) The strong axial light emitted from the prismatic light collecting film shown in FIG. 5 is filtered by the polarizer to become polarized light vibrating in one direction.

4) The polarized light vibrating in one direction shown in fig. 5 is split by a 45-degree splitter to emit two polarized light beams, one of the polarized light beams perpendicularly irradiates the structural grating, and the other polarized light beam is parallel to the original polarized light beam.

The optical axis of the polarized light vertically irradiating the structural grating plate and the optical axis of the natural light vertical to the observation lens form light coaxiality.

5) The polarized light vertically irradiated to the structural grating plate shown in reference to fig. 6 is converted into unidirectional polarized stripe light with bright and dark stripe characteristics through the structural grating,

the unidirectional polarized stripe light and the natural light vertical to the observation lens form the unidirectional polarized stripe coaxial structure light.

6) Referring to fig. 7, when the light with the coaxial polarization stripe structure penetrates through the OLED screen glass substrate and is projected to the organic material coating of the OLED screen, the polarization stripe grating image at the defective portion of the organic material coating generates geometric deformation, the deformed stripe grating image is imaged through natural light reflection, and finally, the human eye or the detection imaging device checks the deformation size of the stripe grating image through the observation lens to achieve the detection purpose.

The position of the OLED screen can be moved or changed in the detection process, and the change of the grating image after the relative position of the structural grating and the OLED screen is continuously changed is further observed, so that the detection effect is enhanced, and the detection accuracy is improved.

Above is the utility model discloses the detailed introduction of the scheme that OLED screen polarisation detection device embodiment provided to general technical personnel in this field, according to the utility model discloses the thought of embodiment all has the change part on concrete implementation and range of application. In summary, the content of the present specification should not be understood as a limitation of the present invention, and any changes made according to the design concept of the present invention are all within the protection scope of the present invention.

Claims

The OLED screen polarization detection device is characterized by comprising an outer shell (1), a light emitting plate (4) arranged in the outer shell (1), a polarization device (5), a 45-degree splitter (6), a structural grating plate (8) and an observation lens (7) arranged on an upper cover plate (1 a) of the outer shell (1).
2. The OLED screen polarization detection device according to claim 1, wherein an antireflection film is coated on the observation lens (7).
3. The OLED screen polarization detection device according to claim 1, wherein the light emitting plate (4) is composed of a fixed plate (4 a) and light emitting beads (4 b) arranged in an array on the inner side of the fixed plate (4 a); the fixing plate (4 a) is a glass fiber plate.
4. The OLED panel polarization detection device according to claim 1, wherein the polarization device (5) comprises a light diffuse reflection plate (5 a), a first prism type light collecting film (5 b), a second prism type light collecting film (5 c) and a polarization plate (5 d).
5. The OLED panel polarization detection device according to claim 4, wherein the light diffuse reflection plate (5 a) is an acrylic light diffusion plate, and the polarizer (5 d) is an acrylic polarizer.
6. The OLED screen polarization detection device according to claim 1, wherein the 45-degree spectroscope (6) is composed of a flat transparent glass sheet (6 a), a light-splitting film (6 b) and an antireflection film (6 c);

the light splitting film (6 b) is covered on one side, facing the polarizing device (5), of the flat transparent glass sheet (6 a), and the antireflection film (6 c) is covered on one side, facing the observation lens (7), of the flat transparent glass sheet (6 a).
7. The OLED screen polarization detection device according to claim 6, wherein the spectroscopic film (6 b) is a 50:50 spectroscopic film.
8. The OLED screen polarization detection device according to claim 1, wherein the structural grating plate (8) is a metal plate, the structural grating plate (8) is uniformly provided with strip-shaped grooves (8 a), and the strip-shaped grooves (8 a) penetrate through the upper surface and the lower surface of the structural grating plate (8).
9. The OLED panel polarization detection device according to claim 1, wherein the detection device further comprises a heat dissipation structure;

the heat dissipation structure comprises a heat dissipation device (2) arranged on the outer side of the light emitting plate (4), and an exhaust air (3 a) and a induced fan (3 b) which are arranged on a left end plate (1 c) and a right end plate (1 d) of the outer shell (1);

the heat dissipation device (2) comprises a power supply connector (2 a), a heat dissipation fan (2 b) and heat dissipation fins (2 c).