TWI874863B - Display detection device, detection method, and detection system - Google Patents

Abstract

A display detection device includes a panel, a detection board, and a detection adapter board. The panel is configured to display. The detection board is coupled to the panel, and is configured to input a detection signal. The detection adapter board is coupled to the panel, and is configured to respond to the detection signal to generate a detection result.

Description

Display detection device, detection method and detection system

This case involves the field of display detection. Specifically, this case involves a display detection device, a detection method, and a detection system.

Existing display detection devices are designed to form a closed loop for detection through the transistors of the panel array circuit to measure current or voltage to determine whether the transistors of the panel array circuit are damaged. However, using the current or voltage measurement method will not be able to detect the less serious degree of transistor damage, such as a small leakage. Therefore, the closed loop for detection by controlling the transistors to form a detection, and using the current or voltage measurement method to determine whether the transistors of the panel array circuit are damaged, cannot fully simulate the panel situation.

Furthermore, since the cost of the micro-luminescent diode in the display device is high, the micro-luminescent diode may be damaged during the detection process.

Therefore, the above technology still has many defects, and it is necessary for practitioners in this field to develop other suitable detection circuit designs.

One aspect of the case involves a display detection device. The display detection device includes a panel, a detection board and a detection adapter board. The panel is used for display. The detection board is coupled to the panel and used to input a detection signal. The detection adapter board is coupled to the panel and used to respond to the detection signal to generate a detection result.

Another aspect of the case involves a detection method. The detection method includes the following steps: combining a detection circuit of a detection adapter board with a panel of a display detection device; inputting a detection signal to the panel through the detection board of the display detection device; and responding to the detection signal through the detection circuit of the detection adapter board to generate a detection result.

Another aspect of the present case involves a detection system. The detection system is used to detect a display detection device. The detection system includes a display detection device and a test machine. The display detection device includes a panel, a detection board, and a detection adapter board. The panel is used for display and for transmitting detection signals from a lighting fixture of the detection system. The detection board is coupled to the panel and is used to transmit detection signals from the panel. The detection adapter board is coupled to the panel and is used to respond to the detection signal to generate a detection result. The test machine includes a probe platform and a sensor. The probe platform is used to locate and calibrate the panel of the display detection device. The sensor is coupled to the probe platform and is used to capture the detection result of the detection adapter board to generate a feature image, so as to evaluate whether the display detection device is abnormal based on the feature image.

The following will clearly illustrate the spirit of the present invention with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person with ordinary knowledge in the relevant technical field can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

The words "include", "including", "have", "contain", etc. used in this article are open terms, meaning including but not limited to.

The terms used in this document generally have the ordinary meanings of each term used in this field, in the context of this case, and in the specific context, unless otherwise specified. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing this case.

FIG. 1 is a circuit block diagram of a display detection device 100 according to some embodiments of the present invention. In some embodiments, referring to FIG. 1 , the display detection device 100 includes a panel 110, a detection board 120, and a detection adapter board 130. In some embodiments, the panel 110 includes a plurality of panel array circuits 111.

In some embodiments, the panel 110 is used for display. The detection board 120 is coupled to the panel 110 and used to input a detection signal. The detection adapter board 130 is directly or indirectly coupled to the panel 110 and used to respond to the detection signal to generate a detection result.

In some embodiments, a plurality of panel array circuits 111 are used for display.

In some embodiments, the plurality of panel array circuits 111 all include control transistors (e.g., control transistor T1) and paired electrode plates (e.g., electrode plates E1). It should be noted that there is a gap between the paired electrode plates E1, and the gap between the paired electrode plates E1 is used to set the light-emitting element. It should be further noted that the plurality of panel array circuits 111 cannot display during the detection process because no light-emitting element is set, so the panel 110 in this case displays a completely black screen.

In some embodiments, the detection adapter board 130 includes a plurality of detection loops (for example: a detection diode D1 coupled to a loop of the panel array circuit 111 through a film probe P1, a detection diode D2 coupled to a loop of the panel array circuit 111 through a film probe P2, and a detection diode DN coupled to a loop of the panel array circuit 111 through a film probe PN). The plurality of detection loops are respectively coupled to each of the plurality of panel array circuits 111 to respond to the detection signal to generate a detection result. The detection result is captured by the optical detection system 900 for analysis.

In some embodiments, each of the plurality of detection loops includes at least one film probe (e.g., film probe P1) and a detection diode (e.g., detection diode D1). It should be noted that, mainly taking the detection loop on the far left in the figure as an example, the plurality of detection loops are the same, and the film probe (e.g., film probe P1) is coupled to each of the plurality of detection loops and each of the plurality of panel array circuits 111 to form a closed loop. The detection diode D1 is coupled to the film probe P1 and is used to emit light according to the detection signal to determine whether the plurality of panel array circuits 111 of the panel 110 are abnormal.

In some embodiments, when the panel 110 displays a completely dark image, the detection diodes of each of the plurality of detection loops are used to determine whether each of the plurality of panel array circuits 111 generates leakage current according to the detection signal. It should be noted that the panel 110 is usually driven by the control transistors T1 to TN in the panel array circuit 111. In a completely dark image, the control transistors T1 to TN do not drive the panel 110 according to the control signal of the display detection device 100.

In some embodiments, if one of the plurality of panel array circuits 111 generates a leakage current, a detection diode (e.g., detection diode D1, detection diode D2, and detection diode D3) emits light according to the size of the leakage current to generate a plurality of light intensities (e.g., a first light intensity L1, a second light intensity L2 to an Nth light intensity LN).

In some embodiments, if the plurality of panel array circuits 111 do not generate leakage current, the electrical detection board 910 outside the display detection device 100 performs voltage detection or current detection on the detection adapter board 130 to determine whether the plurality of panel array circuits 111 are defective. It should be noted that the electrical detection board 910 outside the display detection device 100 is electrically connected to the plurality of detection loops. After the detection, the electrical detection board 910 is removed.

In some embodiments, in order to make the operation of the display detection device 100 of the present case easier to understand, please refer to Figures 1 and 2 together. Figure 2 is a schematic diagram of the step flow of the detection method 200 drawn according to some embodiments of the present case. In some embodiments, the detection method 200 can be executed by the display detection device 100 of Figure 1. The steps of the detection method 200 of the present case are described below.

In step 210, the detection circuit of the detection adapter board is combined with the panel of the display detection device. In some embodiments, please refer to Figures 1 to 2, taking the leftmost circuit of Figure 1 as an example, at least one film probe P1 of the detection circuit of the detection adapter board 130 is coupled to the panel array circuit 111 of the panel 110 to form a closed loop.

In step 220, a detection signal is input to the panel via the detection board of the display detection device. In some embodiments, please refer to FIG. 1 to FIG. 2, and take the leftmost circuit of FIG. 1 as an example, when the panel 110 displays a completely black screen, a detection signal is input to the panel 110 via the detection board 120 of the display detection device 100, and the detection diode D1 of the detection loop of the detection adapter board 130 responds to the detection signal to generate a detection result.

In some embodiments, please refer to FIG. 1, the panel 110 of the display detection device 100 includes a first area and a second area (not shown). The first area and the second area do not overlap. In some embodiments, the detection signal is input to the first area and the second area respectively by the detection board 120 of the display detection device 100. It should be noted that the panel 110 usually includes array-type display pixels. The array-type display pixels are usually composed of a plurality of rows and a plurality of columns. Here, the area refers to a row or a column or a region of interest (ROI). The shape and size of the area are designed by the user according to actual needs and are not limited to the embodiments of this case.

In some embodiments, please refer to FIG. 1 , the detection board 120 of the detection device 100 simultaneously inputs the detection signal to the first area and the second area (not shown in the figure).

In step 230, the detection circuit of the detection adapter board responds to the detection signal to generate a detection result. In some embodiments, please refer to Figures 1 to 2, and take the leftmost circuit in Figure 1 as an example, the detection diode D1 determines whether the leftmost panel array circuit 111 of the panel 110 generates leakage current according to the detection signal.

Next, if the panel array circuit 111 generates a leakage current, the detection diode D1 emits light according to the size of the leakage current to generate a plurality of light intensities (eg, the first light intensity L1).

Furthermore, if the plurality of panel array circuits 111 do not generate leakage current, the electrical property detection board 910 outside the display detection device 100 performs voltage detection or current detection on the detection adapter board 130 to determine whether the plurality of panel array circuits 111 are defective.

FIG. 3 is a schematic diagram of a circuit block of a detection system 2000 according to some embodiments of the present invention. In some embodiments, please refer to FIG. 3 , the detection system 2000 is used to detect a display detection device 2100. The detection system 2000 includes a display detection device 2100 and a test machine 2200.

In some embodiments, the display detection device 2100 includes a panel 2110, a detection board 2120, and a detection adapter board 2130. The panel 2110 is used for display and for transmitting a detection signal from a lighting fixture (not shown) of the detection system 2000. The detection board 2120 is coupled to the panel 2110 and is used to transmit the detection signal from the panel 2110. The detection adapter board 2130 is directly or indirectly coupled to the panel 2110 and is used to respond to the detection signal to generate a detection result.

In some embodiments, the test machine 2200 includes a probe platform 2210, a sensor 2220, and auxiliary sensors 2211-2213. The probe platform 2210 is used to position and calibrate the panel 2110 of the display detection device 2100. The sensor 2220 is coupled to the probe platform 2210 and is used to capture the detection result of the detection adapter board 2130 to generate a feature image, so as to evaluate whether the display detection device 2100 is abnormal according to the feature image.

It should be noted that the display detection device 2100 in FIG. 3 corresponds to the display detection device 100 in FIG. 1 , and the remaining structures and operations have been explained in the above paragraphs and will not be elaborated here.

In some embodiments, the test machine 2200 may be an automated optical inspection system (AOI). The test machine 2200 captures the optical image of the detection result of the detection adapter board 2130 of the display detection device 2100 through the sensor 2220, converts the information such as brightness, color, pixel distribution into a digital image signal, and then the computer and program perform various mathematical operations on the digital image signal to extract the characteristics of the target, analyze and interpret the image content, and then output the result according to the preset tolerance and other required conditions. In this way, the panel 2110 is detected by the light intensity of the detection diodes D1~DN of the detection adapter board 2130 (for example: the first light intensity L1, the second light intensity L2 to the Nth light intensity LN).

FIG. 4 is a schematic diagram of a circuit block of a detection system 3000 according to some embodiments of the present invention. In some embodiments, please refer to FIG. 4. The difference between the detection system 3000 of FIG. 4 and the detection system 2000 of FIG. 3 is that the position of the detection board 3120 is changed and the probe platform 3210 of the test machine 3200 includes a lighting fixture 3213 and an aluminum extrusion bracket 3214. The rest of the structure is similar to the detection system 2000 of FIG. 3.

In some embodiments, the detection system 3000 includes a display detection device 3100 and a test machine 3200. In some embodiments, the display detection device 3100 includes a panel 3110, a detection board 3120, and a detection adapter board 3130. In some embodiments, the test machine 3200 includes a probe platform 3210, a detection sensor 3220, an alignment sensor 3211 and an alignment sensor 3212, a lighting fixture 3213, and an aluminum extrusion bracket 3214.

In some embodiments, the panel 3110 is used for display and for transmitting a detection signal from a lighting fixture 3213 of a probe platform 3210 of a test machine 3200 of a self-detection system 3000. The detection board 3120 is coupled to the panel 3110 and is used for transmitting a detection signal from the panel 3110. The detection adapter board 3130 is indirectly coupled to the panel 3110 through the detection board 3120 and is used for responding to the detection signal to generate a detection result.

In some embodiments, the lighting fixture 3213 of the probe platform 3210 is used to generate a detection signal to the panel 3110, which is then transmitted to the detection diode D1 of the upper detection adapter board 3130 through the detection board 3120 to the detection diode DN.

In some embodiments, the detection sensor 3220, the alignment sensor 3211, and the alignment sensor 3212 are respectively disposed on the aluminum extrusion bracket 3214.

FIG. 5 is an enlarged schematic diagram of a local area Z of the detection system 3000 of FIG. 4 according to some embodiments of the present invention. In some embodiments, please refer to FIG. 4 and FIG. 5, the detection board 3120 further includes a probe card head 3121 and a probe card printed circuit board 3122. The probe card head 3121 includes a plurality of wire pins N1. The bottom of the plurality of wire pins N1 contacts the panel 3110 of FIG. 4 (not shown in the figure). The top of the plurality of wire pins N1 contacts the probe card printed circuit board 3122. The probe card printed circuit board 3122 has a plurality of sets of lines connecting the panel 3110 of FIG. 4 and the detection adapter board 3130.

In some embodiments, the detection adapter board 3130 includes detection diodes D1 to DN, spring pins 3131, and a printed circuit board 3132. The detection adapter board 3130 has multiple sets of lines extending upward from the panel 3110 in FIG. 4. The bottom of the detection adapter board 3130 is connected using spring pins 3131. The top of the spring pin 3131 contacts the printed circuit board 3132 of the detection adapter board 3130.

In some embodiments, referring to FIG. 3 to FIG. 5, the positions of the detection diodes D1 to the detection diodes DN in FIG. 5 correspond to the positions of the panel array circuits (or pixels) of the panel 3110 in FIG. 4, and the position correspondence is similar to the position correspondence of the detection diodes D1 of the plurality of panel array circuits 2111 and the detection adapter board 2130 in FIG. 3. Therefore, the panel 3110 in FIG. 4 can be detected by the light intensity of the detection diodes D1 to the detection diodes DN.

According to the above-mentioned embodiments, the present case provides a display detection device, a detection method and a detection system, which are used to detect whether the circuit in the panel generates leakage current under a completely dark screen, and to determine the defects of the panel based on the light intensity converted by the leakage current.

Although the present invention is disclosed in detail with the embodiments as above, the present invention does not exclude other feasible embodiments. Therefore, the protection scope of the present invention shall be subject to the scope of the attached patent application, and shall not be limited by the aforementioned embodiments.

For those skilled in the art, various modifications and improvements can be made to the present invention without departing from the spirit and scope of the present invention. Based on the above embodiments, all modifications and improvements made to the present invention are also covered by the protection scope of the present invention.

100: Display detection device 110: Panel 111: Panel array circuit 120: Detection board 130: Detection adapter board T1~TN: Control transistor E1~EN: Electrode plate P1~PN: Thin film probe D1~DN: Detection diode L1~LN: Light intensity 900: Optical detection system 910: Electrical detection board 200: Method 210~230: Steps 2000: Detection system 2100: Display detection device 2110: Panel 2111: Panel array circuit D1: Detection diode 2120: Detection board 2130: Detection adapter board 2200: Test machine 2210: Probe platform 2220: Sensor 2211~2213: Auxiliary sensor P1~P2: Station B: Substrate 3000: Detection system 3100: Display detection device 3110: Panel 2120: Detection board 3130: Detection adapter board 3200: Test machine 3210: Probe platform 3220: Detection sensor 3211~3212: Alignment sensor 3213: Lighting fixture 3214: Aluminum extrusion bracket Z: Local area 3121: Probe card head 3122: Probe card printed circuit board 3131: Spring needle 3132: Printed circuit board N1: Wire needle

The content of the present invention can be better understood by referring to the implementation methods in the subsequent paragraphs and the following figures: Figure 1 is a schematic diagram of a circuit block of a display detection device according to some embodiments of the present invention; Figure 2 is a schematic diagram of a step flow of a detection method according to some embodiments of the present invention; Figure 3 is a schematic diagram of a circuit block of a detection system according to some embodiments of the present invention; Figure 4 is a schematic diagram of a circuit block of a detection system according to some embodiments of the present invention; and Figure 5 is a schematic diagram of a local area enlargement of a detection system according to some embodiments of the present invention.

Domestic storage information (please note in the order of storage institution, date, and number) None Foreign storage information (please note in the order of storage country, institution, date, and number) None

100: Display detection device

110: Panel

111: Panel array circuit

120:Test board

130: Detection adapter board

T1~TN: control transistor

E1~EN: Electrode plate

P1~PN: Thin film probe

D1~DN: detection diode

L1~LN: Light intensity

900: Optical detection system

910: Electrical test board

Claims (20)

A display detection device includes: a panel for display; a detection board coupled to the panel and used to input a detection signal; and a detection adapter board coupled to the panel and used to respond to the detection signal to generate a detection result, wherein the detection result is a plurality of light intensities of a plurality of detection diodes of the detection adapter board in response to a leakage current of the panel. A display detection device as described in claim 1, wherein the panel includes: a plurality of panel array circuits for display. The display detection device as described in claim 2, wherein the detection adapter board includes: a plurality of detection loops, respectively coupled to each of the panel array circuits to respond to the detection signal to generate the detection result. The display detection device as described in claim 3, wherein each of the detection loops comprises: at least one film probe coupled to each of the detection loops and each of the panel array circuits to form a closed loop; and the detection diode coupled to the at least one film probe and used to emit light according to the detection signal to determine whether the panel array circuits of the panel are abnormal. The display detection device as described in claim 4, wherein when the panel displays a completely dark screen, the detection diode of each of the detection loops is used to determine whether each of the panel array circuits generates the leakage current according to the detection signal. The display detection device as described in claim 5, wherein if one of the panel array circuits generates the leakage current, the detection diode emits light according to the magnitude of the leakage current to generate the light intensities. As described in claim 5, if the panel array circuits do not generate the leakage current, an electrical property test board outside the display test device performs voltage test or current test on the test adapter board to determine whether each of the panel array circuits is defective. A detection method includes: combining a detection circuit of a detection adapter board to a panel of a display detection device; inputting a detection signal to the panel through a detection board of the display detection device; and responding to the detection signal through the detection circuit of the detection adapter board to generate a detection result, wherein the detection result is a plurality of light intensities of a plurality of detection diodes of the detection adapter board in response to a leakage current of the panel. The detection method as described in claim 8, wherein the step of combining the detection circuit of the detection adapter board with the panel of the display detection device includes: coupling at least one film probe of the detection circuit of the detection adapter board to one of the plurality of panel array circuits of the panel to form a closed loop. The detection method as described in claim 8, wherein the step of inputting the detection signal through the detection board of the display detection device includes: when the panel displays a completely black screen, the detection signal is input to the panel through the detection board of the display detection device, and the detection diodes of each detection circuit of the detection adapter board respond to the detection signal to generate the detection result. The detection method as described in claim 10, wherein the step of generating the detection result by the detection circuit of the detection adapter board responding to the detection signal includes: determining whether the plurality of panel array circuits of the panel generate a leakage current according to the detection signal by each of the detection diodes; and if one of the panel array circuits generates the leakage current, each of the detection diodes emits light according to the size of the leakage current to generate the light intensities. As described in claim 10, the step of generating the detection result by the detection circuit of the detection adapter board responding to the detection signal further includes: if the plurality of panel array circuits do not generate the leakage current, then the detection adapter board is subjected to voltage detection or current detection by an electrical detection board outside the display detection device to determine whether the panel array circuits are defective. The detection method as described in claim 8, wherein the panel of the display detection device includes a first area and a second area, wherein the first area and the second area do not overlap, wherein the step of inputting the detection signal through the detection board of the display detection device includes: inputting the detection signal to the first area and the second area respectively through the detection board of the display detection device. As described in claim 13, the step of inputting the detection signal through the detection board of the display detection device further includes: simultaneously inputting the first area and the second area of the detection signal through the detection board of the display detection device. A detection system, comprising: a display detection device, comprising: a panel for displaying and transmitting a detection signal from a lighting fixture of the detection system; a detection board coupled to the panel and transmitting the detection signal from the panel; and a detection adapter board coupled to the panel and responding to the detection signal to generate a detection result, wherein the detection result is the detection adapter board A plurality of detection diodes respond to a plurality of light intensities of a leakage current of the panel; and a testing machine, comprising: a probe platform for positioning and calibrating the panel of the display detection device; and a sensor coupled to the probe platform and used to capture the light intensities of the detection result of the detection adapter board to generate a characteristic image, so as to evaluate whether the display detection device is abnormal according to the characteristic image. A detection system as described in claim 15, wherein the panel comprises: a plurality of panel array circuits for display. The detection system as described in claim 16, wherein the detection adapter board includes: a plurality of detection loops, respectively coupled to each of the panel array circuits to respond to the detection signal to generate the detection result. The detection system as described in claim 17, wherein each of the detection loops comprises: at least one film probe coupled to each of the detection loops and each of the panel array circuits to form a closed loop; and the detection diode coupled to the at least one film probe and used to emit light according to the detection signal to determine whether the panel array circuits of the panel are abnormal. As described in claim 18, when the panel displays a completely dark screen, the detection diode of each of the detection loops is used to determine whether the panel array circuits generate the leakage current according to the detection signal, and if one of the panel array circuits generates the leakage current, the detection diode emits light according to the size of the leakage current to generate the light intensities, and the sensor of the test machine is further used to generate the characteristic image according to the light intensities. As described in claim 19, if the panel array circuits do not generate the leakage current, an electrical property test board outside the display test device performs voltage test or current test on the test adapter board to determine whether each of the panel array circuits is defective.