TW202033955A - Apparatus for inspecting cover display panel - Google Patents

Apparatus for inspecting cover display panel Download PDF

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TW202033955A
TW202033955A TW108148173A TW108148173A TW202033955A TW 202033955 A TW202033955 A TW 202033955A TW 108148173 A TW108148173 A TW 108148173A TW 108148173 A TW108148173 A TW 108148173A TW 202033955 A TW202033955 A TW 202033955A
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display panel
display
camera
reference pattern
phase
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TW108148173A
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TWI719784B (en
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李相允
姜聲鏞
李賢植
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南韓商英泰克普拉斯有限公司
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8806—Specially adapted optical and illumination features
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N2021/9513—Liquid crystal panels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/06—Illumination; Optics
    • G01N2201/063—Illuminating optical parts
    • G01N2201/0636—Reflectors

Abstract

The present invention relates to an apparatus for inspecting cover display panel. The display generates periodic reference patterns and irradiates the surface of the display panel as the inspection object with an incident angle greater than the critical angle of Total Internal Reflection. The camera captures the image reflected from the surface of the display panel while irradiating the reference pattern on the surface of the display panel. The controller uses the display to phase shift the reference pattern by a predetermined angle each time in a cycle while acquiring images sequentially through the camera, and then calculates the phase and inclination of the display panel surface based on the acquired images, thereby distinguishing whether the display panel surface is defective or not.

Description

顯示面板檢查裝置 Display panel inspection device

本發明涉及顯示面板檢查裝置，更詳細地說涉及檢查顯示面板的外觀缺陷的裝置。 The present invention relates to a display panel inspection device, and more specifically to a device for inspecting appearance defects of a display panel.

通常，在智慧手機、筆記型電腦、電視、電腦顯示器等正在廣泛利用顯示面板。這種顯示面板有LCD(Liquid Crystal Display，液晶顯示器)面板、OLED(Organic Light Emitting Diode，有機發光二極體)面板等。 Generally, display panels are widely used in smart phones, notebook computers, televisions, computer monitors, and the like. Such display panels include LCD (Liquid Crystal Display, liquid crystal display) panels, OLED (Organic Light Emitting Diode, organic light emitting diode) panels, and the like.

另一方面，在顯示面板的生產過程中可在顯示面板的表面出現外觀缺陷，諸如劃痕(scratch)、破裂(crack)、破碎(chipping)等。尤其是，OLED面板由柔性基板構成，硬度低，因此表面被按壓也可出現凹痕(dent)等的外觀缺陷。所以，在顯示面板的生產現場實施用於檢查顯示面板的外觀缺陷的工藝。 On the other hand, appearance defects such as scratches, cracks, chipping, etc. may appear on the surface of the display panel during the production process of the display panel. In particular, the OLED panel is composed of a flexible substrate and has low hardness, so appearance defects such as dents may appear even when the surface is pressed. Therefore, a process for inspecting the appearance defects of the display panel is implemented at the production site of the display panel.

然而，以往技術人員用肉眼檢查，在這一情況下存在如下的問題：因為工作人員的熟練程度等的個人差異降低檢查缺陷的可靠性，而且工作人員為了檢查缺陷而長時間集中工作導致眼睛疲勞，因此降低生產力。 However, in the past, technicians inspected with naked eyes. In this case, there were the following problems: the reliability of inspecting defects was reduced due to the individual difference of the staff's proficiency, and the staff working concentratedly for a long time to inspect the defects caused eye fatigue. , Thus reducing productivity.

本發明的課題在於提供一種顯示面板檢查裝置，將顯示面板的外觀缺陷檢測自動化，可提高生產力，並且可提高檢測缺陷的可靠性。 The subject of the present invention is to provide a display panel inspection device that automates the detection of appearance defects of the display panel, can improve productivity, and can improve the reliability of detecting defects.

用於達成上述課題的本發明的顯示面板檢查裝置包括：顯示器、攝像頭及控制器。顯示器生成週期性的基準圖案，以大於全反射臨界角的入射角照射於作為檢查物件的顯示面板表面。攝像頭對顯示面板表面照射基準圖案的狀態下獲取從顯示面板表面反射的圖像。控制器通過顯示器將基準圖案在一個週期內每次相移(phase shifting)預定角度的同時通過攝像頭依次獲取圖像，之後基於獲取的圖像針對顯示面板表面計算相位和傾斜度，從而分辨顯示面板表面是否有缺陷。 The display panel inspection device of the present invention for achieving the above-mentioned problems includes a display, a camera, and a controller. The display generates periodic reference patterns and irradiates the surface of the display panel as the inspection object with an incident angle greater than the critical angle of total reflection. The camera captures the image reflected from the surface of the display panel while irradiating the reference pattern on the surface of the display panel. The controller uses the display to phase shift the reference pattern by a predetermined angle each time in a cycle, and simultaneously obtains images through the camera, and then calculates the phase and inclination of the display panel surface based on the obtained images, thereby distinguishing the display panel Whether the surface is defective.

在此，控制器通過顯示器將基準圖案每次相移90°的同時通過攝像頭依次獲取四個圖像。 Here, the controller uses the display to shift the phase of the reference pattern by 90° each time, and simultaneously obtains four images through the camera.

然後，顯示面板檢查裝置包括鏡子，接收從顯示面板表面反射的光反射到攝像頭。攝像頭可配置成接收由鏡子反射的光。 Then, the display panel inspection device includes a mirror that receives the light reflected from the surface of the display panel and reflects it to the camera. The camera may be configured to receive light reflected by the mirror.

通過本發明，將對顯示面板的外觀缺陷檢測自動化，具有可提高生產力並且可提高檢測缺陷的可靠性的效果。 Through the present invention, the appearance defect detection of the display panel is automated, and the productivity can be improved and the reliability of the defect detection can be improved.

10:顯示面板 10: Display panel

100:顯示面板檢查裝置 100: Display panel inspection device

101:檢查台 101: Inspection Table

102:檢查框架 102: Check the frame

110:顯示器 110: display

111:基準圖案 111: Reference pattern

120:攝像頭 120: camera

130:控制器 130: Controller

140:鏡子 140: mirror

圖1是本發明的一實施例的顯示面板檢查裝置的結構圖。 FIG. 1 is a structural diagram of a display panel inspection device according to an embodiment of the present invention.

圖2是示出圖1的顯示面板檢查裝置的一部分的結構圖。 FIG. 2 is a configuration diagram showing a part of the display panel inspection device of FIG. 1.

圖3是圖2的立體圖。 Fig. 3 is a perspective view of Fig. 2.

圖4是示出將基準圖案每次相移90°的同時依次獲取的圖像的示例的照片。 FIG. 4 is a photograph showing an example of images sequentially acquired while phase shifting the reference pattern by 90° each time.

圖5是示出基於圖4的圖像所求得的相位圖像及傾斜度圖 像的照片。 Fig. 5 is a diagram showing the phase image and tilt obtained based on the image of Fig. 4 Like photos.

參照附圖，如下詳細說明本發明。在此，對於相同的結構使用相同的附圖標記，並且省略反復的說明、可使本發明的要點不清楚的公知功能及結構的詳細說明。本發明的實施形式是為了將本發明更加完整地告知在本技術領域具有常規知識的人員而提供的。因此，為了更加明確說明，在附圖中可誇張示出構件的形狀及大小等。 With reference to the drawings, the present invention will be described in detail as follows. Here, the same reference numerals are used for the same structure, and repeated descriptions and detailed descriptions of known functions and structures that may make the gist of the present invention unclear are omitted. The implementation form of the present invention is provided for the purpose of more completely informing the person having conventional knowledge in the technical field of the present invention. Therefore, in order to make the description clearer, the shapes and sizes of the members may be exaggerated in the drawings.

圖1是本發明的一實施例的顯示面板檢查裝置的結構圖。圖2是示出圖1的顯示面板檢查裝置的一部分的結構圖。圖3是圖2的立體圖。 FIG. 1 is a structural diagram of a display panel inspection device according to an embodiment of the present invention. FIG. 2 is a configuration diagram showing a part of the display panel inspection device of FIG. 1. Fig. 3 is a perspective view of Fig. 2.

參照圖1至圖3，本發明的一實施例的顯示面板檢查裝置100包括：顯示器110、攝像頭120及控制器130。 1 to 3, the display panel inspection apparatus 100 according to an embodiment of the present invention includes: a display 110, a camera 120, and a controller 130.

顯示器110生成週期性的基準圖案111照射於作為檢查物件的顯示面板10表面。在此，顯示面板10可以是OLED面板，但是也可以是LCD面板等。顯示面板10在待檢查的表面朝上的狀態下安裝在檢查台101的XY水平面的情況下，顯示器110可配置成在顯示面板10的上側以設定入射角照射基準圖案111。檢查台101可被固定並支撐在檢查框架102，顯示器110可被固定並支撐在檢查框架102。 The display 110 generates a periodic reference pattern 111 and irradiates the surface of the display panel 10 as an inspection object. Here, the display panel 10 may be an OLED panel, but may also be an LCD panel or the like. When the display panel 10 is installed on the XY level of the inspection table 101 with the surface to be inspected facing upward, the display 110 may be configured to illuminate the reference pattern 111 at a set incident angle on the upper side of the display panel 10. The inspection table 101 may be fixed and supported on the inspection frame 102, and the display 110 may be fixed and supported on the inspection frame 102.

基準圖案111能夠以相對亮的亮帶和相對暗的暗帶交替排列的形式構成。亮帶和暗帶分別具有預定週期。顯示器110由平面顯示裝置構成，諸如LCD裝置或者OLED裝置等，進而以面光源形式將基準圖案111照射於顯示面板10的整個表面。顯示器110被控制器130控制，以在對顯示面板10表面進行外觀檢查時在一個週期內將基準圖案111每次相移預定角度。 The reference pattern 111 can be constituted in a form in which relatively bright bright bands and relatively dark dark bands are alternately arranged. The bright band and the dark band each have a predetermined period. The display 110 is composed of a flat display device, such as an LCD device or an OLED device, and the reference pattern 111 is illuminated on the entire surface of the display panel 10 in the form of a surface light source. The display 110 is controlled by the controller 130 to shift the phase of the reference pattern 111 by a predetermined angle each time in one cycle when the surface of the display panel 10 is inspected.

顯示面板10構成為通過表面透射光，因此有必要全反射從顯示器110入射到顯示面板10表面的基準圖案111提供於攝像頭120。為此，顯示器110以大於全反射臨界角的入射角α將基準圖案111照射於顯示面板10表面。基準圖案111的入射角α越大則可更好地實現基準圖案111的全反射，但是會增加顯示面板檢查裝置100的足跡(Footprint)。若顯示面板10為OLED面板，則基準圖案111的入射角α可設定為55~57°。 The display panel 10 is configured to transmit light through the surface, so it is necessary that the reference pattern 111 incident on the surface of the display panel 10 from the display 110 is provided to the camera 120 with total reflection. To this end, the display 110 irradiates the reference pattern 111 on the surface of the display panel 10 at an incident angle α greater than the critical angle of total reflection. The larger the incident angle α of the reference pattern 111 is, the better the total reflection of the reference pattern 111 can be achieved, but the footprint of the display panel inspection apparatus 100 will increase. If the display panel 10 is an OLED panel, the incident angle α of the reference pattern 111 can be set to 55-57°.

攝像頭120在基準圖案111照射於顯示面板10表面的狀態下獲取從顯示面板10表面反射的圖像。若基準圖案111照射於顯示面板10表面，則基準圖案111受到顯示面板10表面形狀的影響可隨之變形。攝像頭120獲取變形的基準圖案的圖像，進而可反向地求得顯示面板10表面形狀。 The camera 120 acquires an image reflected from the surface of the display panel 10 in a state where the reference pattern 111 is irradiated on the surface of the display panel 10. If the reference pattern 111 is irradiated on the surface of the display panel 10, the reference pattern 111 can be deformed due to the influence of the surface shape of the display panel 10. The camera 120 acquires an image of the deformed reference pattern, and the surface shape of the display panel 10 can be obtained in reverse.

攝像頭120可由CCD攝像頭(charge-coupled device camera)等構成。CCD攝像頭是使用電荷耦合元件(CCD)將圖像變換為電信號的裝置。攝像頭120可通過透鏡接收從顯示面板10表面反射的光。 The camera 120 may be composed of a CCD camera (charge-coupled device camera) or the like. A CCD camera is a device that uses a charge coupled device (CCD) to convert images into electrical signals. The camera 120 may receive light reflected from the surface of the display panel 10 through a lens.

攝像頭120可與顯示器110一同配置在顯示面板10的一側，以將顯示面板檢查裝置100的足跡最小化。例如，若顯示器110配置在顯示面板10左側，則攝像頭120可在顯示面板10的左側高於顯示器100配置。在這一情況下，鏡子140接收從顯示面板10表面反射的光可反射到攝像頭120。 The camera 120 and the display 110 may be arranged on one side of the display panel 10 to minimize the footprint of the display panel inspection apparatus 100. For example, if the display 110 is arranged on the left side of the display panel 10, the camera 120 can be arranged higher than the display 100 on the left side of the display panel 10. In this case, the light reflected from the surface of the display panel 10 received by the mirror 140 may be reflected to the camera 120.

鏡子140配置在顯示器110的相反側，且在鏡子140和顯示器110之間配置顯示面板10。鏡子140能夠以反射面朝向顯示器110側的狀態垂直豎立配置。鏡子140可被固定並支撐在檢查框架102。攝像頭120可配置成接收由鏡子140反射的光。攝像頭120在受光軸對水平面傾斜設定角度β的狀態下可通過支架等固定在檢查框架102。若基準圖案111的 入射角α為56°，則攝像頭120的受光軸角度β可以是34°。 The mirror 140 is arranged on the opposite side of the display 110, and the display panel 10 is arranged between the mirror 140 and the display 110. The mirror 140 can be vertically erected with the reflective surface facing the display 110 side. The mirror 140 may be fixed and supported on the inspection frame 102. The camera 120 may be configured to receive light reflected by the mirror 140. The camera 120 can be fixed to the inspection frame 102 by a bracket or the like in a state where the light receiving axis is inclined by a set angle β to the horizontal plane. If the reference pattern 111 When the incident angle α is 56°, the receiving axis angle β of the camera 120 may be 34°.

控制器130通過顯示器110在一個週期內將基準圖案111每次相移(phase shifting)預定角度的同時通過攝像頭120依次獲取圖像，之後基於獲取的圖像針對顯示面板10表面計算相移和傾斜度，從而分辨顯示面板10表面是否有缺陷。 The controller 130 acquires images sequentially through the camera 120 while phase shifting the reference pattern 111 by a predetermined angle each time through the display 110, and then calculates the phase shift and tilt for the surface of the display panel 10 based on the acquired images. In order to determine whether the surface of the display panel 10 is defective.

若在顯示面板10表面存在諸如劃痕、破裂、破碎等的外觀缺陷，則可在通過控制器130計算實現的相位圖像和傾斜度圖像出現外觀缺陷區域。控制器130處理相位圖像和傾斜度圖像分辨顯示面板10表面是否有缺陷。 If there are appearance defects such as scratches, cracks, cracks, etc. on the surface of the display panel 10, an appearance defect area may appear in the phase image and the tilt image calculated by the controller 130. The controller 130 processes the phase image and the tilt image to distinguish whether the surface of the display panel 10 is defective.

例如，控制器130對於相位圖像和傾斜度圖像利用貼標(labeling)技術可檢測外觀缺陷區域。貼標是搜索圖像的所有圖元利用四連通(4-connected)或者八連通(8-connected)等連接關係通過編號的方法區分各個物件的方法。 For example, the controller 130 can detect the appearance defect area using a labeling technology for the phase image and the tilt image. Labeling is a method of searching for all the image elements of the image to distinguish each object by numbering using the connection relationship such as 4-connected or 8-connected.

控制器130基於通過貼標得出的相位圖像資料及傾斜度數據區分背景區域和外觀缺陷區域，通過該過程可檢測外觀缺陷區域。若檢測出外觀缺陷區域，則控制器130判斷為顯示面板10表面存在缺陷。此時，若通過AND計算從相位圖像資料和傾斜度圖像資料都檢測出外觀缺陷區域，則控制器130可判斷在顯示面板10表面存在缺陷。控制器130可由可執行控制程式的至少一個程式構成。 The controller 130 distinguishes the background area and the appearance defect area based on the phase image data and tilt data obtained by labeling, and the appearance defect area can be detected through this process. If the appearance defect area is detected, the controller 130 determines that there is a defect on the surface of the display panel 10. At this time, if the appearance defect area is detected from both the phase image data and the inclination image data by AND calculation, the controller 130 can determine that there is a defect on the surface of the display panel 10. The controller 130 may be composed of at least one program that can execute a control program.

另一方面，控制器130通過顯示器110將基準圖案111每次相移90°的同時可通過攝像頭120依次獲取四個圖像。例如，控制器130通過顯示器110將基準圖案111每次相移90°的同時可通過攝像頭120依次獲取四個圖像的情況下，四個圖像的亮度值如下數學式1所示： On the other hand, the controller 130 may sequentially acquire four images through the camera 120 while shifting the reference pattern 111 by 90° through the display 110 each time. For example, when the controller 130 phase-shifts the reference pattern 111 by 90° through the display 110 each time, four images can be sequentially acquired through the camera 120, and the brightness values of the four images are shown in the following mathematical formula 1:

(數學式1)

Figure 108148173-A0202-12-0006-1
(Math 1)
Figure 108148173-A0202-12-0006-1

在此，x,y是空間變數(spatial variables)。I 0(x,y)是基準圖案的平均亮度值。γ(x,y)基準圖案的能見度(visibility)。

Figure 108148173-A0202-12-0006-9
是待測量的相位值。
Figure 108148173-A0202-12-0006-10
的指將基準圖案每次移動δ左右，即90°。 Here, x and y are spatial variables. I 0 ( x , y ) is the average brightness value of the reference pattern. γ ( x , y ) the visibility of the reference pattern.
Figure 108148173-A0202-12-0006-9
Is the phase value to be measured.
Figure 108148173-A0202-12-0006-10
The finger moves the reference pattern about δ each time, that is, 90°.

通過三角函數等效值的計算變換作為所述數學式1所示的四個圖像的亮度值的I 1(x,y),I 2(x,y),I 3(x,y),I 4(x,y)，之後解聯立方程式，可如下數學式2求得顯示面板表面的各個點的相位

Figure 108148173-A0202-12-0006-11
： I 1 ( x , y ), I 2 ( x , y ), I 3 ( x , y ), I 1 ( x , y ), I 2 ( x , y ), I 3 ( x , y ), as the brightness values of the four images shown in the mathematical formula 1 are transformed by calculation of the equivalent value of the trigonometric function, I 4 ( x , y ), after solving the simultaneous equations, the phase of each point on the surface of the display panel can be obtained by the following formula 2
Figure 108148173-A0202-12-0006-11
:

Figure 108148173-A0202-12-0006-2
Figure 108148173-A0202-12-0006-2

將如上所述求得的相位

Figure 108148173-A0202-12-0006-12
帶入表示相位和傾斜度的關係的以下數學式3，可求得傾斜度： The phase obtained as described above
Figure 108148173-A0202-12-0006-12
Incorporating the following mathematical formula 3 which represents the relationship between phase and tilt, the tilt can be obtained:

Figure 108148173-A0202-12-0006-3
Figure 108148173-A0202-12-0006-3

在此，

Figure 108148173-A0202-12-0006-13
、
Figure 108148173-A0202-12-0006-14
分別是局部位置(i,j)的x軸及y軸傾斜度，h是資料間隔，N是資料個數。 here,
Figure 108148173-A0202-12-0006-13
,
Figure 108148173-A0202-12-0006-14
They are the inclination of the x-axis and the y-axis of the local position ( i , j ), h is the data interval, and N is the number of data.

例如，在顯示面板10表面有外觀缺陷的情況下，若控制器130通過顯示器110將基準圖案111每次相移90°的同時可通過攝像頭120 依次獲取四個圖像，則獲取的圖像可如圖4的(a)、(b)、(c)、(d)所示。 For example, in the case of an appearance defect on the surface of the display panel 10, if the controller 130 shifts the reference pattern 111 by 90° through the display 110 each time, it can pass through the camera 120. Four images are acquired in sequence, and the acquired images can be as shown in Figure 4 (a), (b), (c), (d).

若控制器130基於獲取的圖像針對顯示面板10表面計算相位和傾斜度，則可如圖5的(a)求得相位圖像以及如圖5的(b)求得傾斜度圖像。如圖5的(a)及(b)所示，可確認到在相位圖像和傾斜度圖像上出現缺陷區域(DZ)。控制器130按照如上述的示例處理相位圖像和傾斜度圖像，分辨顯示面板10表面是否有缺陷。 If the controller 130 calculates the phase and the inclination for the surface of the display panel 10 based on the acquired image, the phase image can be obtained as shown in FIG. 5(a) and the inclination image can be obtained as shown in FIG. 5(b). As shown in (a) and (b) of Fig. 5, it can be confirmed that a defect area (DZ) appears in the phase image and the gradient image. The controller 130 processes the phase image and the tilt image according to the above-mentioned example, and distinguishes whether the surface of the display panel 10 is defective.

如上所述，通過本實施例的顯示面板檢查裝置100，將顯示面板10的外觀缺陷檢測自動化，可提高生產力，並且可提高檢測缺陷的可靠性。 As described above, with the display panel inspection device 100 of this embodiment, the appearance defect detection of the display panel 10 is automated, productivity can be improved, and the reliability of defect detection can be improved.

參考在附圖示出的一實施例說明了本發明，但是這僅是示例性的，應該理解為在該技術領域具有常規知識的人員可從此實施各種變形及同等的其他實施例。因此，本發明的真正的保護範圍應該只由申請專利範圍定義。 The present invention has been described with reference to an embodiment shown in the accompanying drawings, but this is only exemplary, and it should be understood that a person with ordinary knowledge in the technical field can implement various modifications and other equivalent embodiments from this. Therefore, the true scope of protection of the present invention should only be defined by the scope of patent application.

10:顯示面板 10: Display panel

100:顯示面板檢查裝置 100: Display panel inspection device

101:檢查台 101: Inspection Table

102:檢查框架 102: Check the frame

110:顯示器 110: display

120:攝像頭 120: camera

130:控制器 130: Controller

140:鏡子 140: mirror

Claims (3)

一種顯示面板檢查裝置，包括： A display panel inspection device, including: 顯示器，生成週期性的基準圖案，以大於全反射臨界角的入射角照射於作為檢查物件的顯示面板表面； The display generates periodic reference patterns and irradiates the surface of the display panel as the inspection object at an incident angle greater than the critical angle of total reflection; 攝像頭，對所述顯示面板表面照射基準圖案的狀態下獲取從所述顯示面板表面反射的圖像；及 A camera, which acquires an image reflected from the surface of the display panel while irradiating the surface of the display panel with a reference pattern; and 控制器，通過所述顯示器將基準圖案在一個週期內每次相移預定角度的同時通過所述攝像頭依次獲取圖像，之後基於獲取的圖像針對所述顯示面板表面計算相位和傾斜度，從而分辨所述顯示面板表面是否有缺陷。 The controller uses the display to phase-shift the reference pattern by a predetermined angle each time within a cycle while sequentially acquiring images through the camera, and then calculating the phase and the inclination of the display panel surface based on the acquired images, thereby Identify whether the surface of the display panel is defective. 如申請專利範圍第1項所述的顯示面板檢查裝置，其中， The display panel inspection device described in item 1 of the scope of patent application, wherein: 所述控制器通過所述顯示器將基準圖案每次相移90°的同時通過所述攝像頭依次獲取四個圖像。 The controller uses the display to phase-shift the reference pattern by 90° each time and simultaneously obtains four images through the camera in sequence. 如申請專利範圍第1項所述的顯示面板檢查裝置，其中，包括： The display panel inspection device described in item 1 of the scope of patent application includes: 鏡子，接收從所述顯示面板表面反射的光反射到所述攝像頭。 The mirror receives the light reflected from the surface of the display panel and reflects it to the camera.
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