TWI881679B - Methods for positioning objects in an object array, methods for detecting the brightness of light-emitting diode (led) chips, equipment for detecting the brightness of light-emitting diode (led) chips, computer program and computer-readable recording media storing program - Google Patents

Abstract

The present invention provides a method for positioning objects in an object array, which includes: (a) selecting two adjacent objects in the object array, wherein the two adjacent objects have a spacing, and the spacing is at least accommodate the two adjacent objects; (b) defining a detection frame based on the spacing between the two adjacent objects; (c) calculating a center point of the detection frame; and (d) moving the detection frame until the center point of the detection frame touches one of the two adjacent objects to locate the touched object. The method of positioning objects in an object array of the present invention is suitable for detecting the brightness of light emitting diode (LED) chips.

Description

Method for positioning an object in an array of objects, method for detecting brightness of a light emitting diode (LED) chip, apparatus for detecting brightness of a light emitting diode (LED) chip, computer program, and computer readable recording medium storing the program

This application is related to a method for locating an object in an object array, and more specifically, to a method for locating an object in an object array through a detection frame. This application is also related to a method for detecting the brightness of a light emitting diode (LED) chip, a device for detecting the brightness of a light emitting diode (LED) chip, a computer program, and a computer-readable recording medium storing the program.

Electronic devices such as televisions and computer monitors include an array of objects composed of electronic components (e.g., light-emitting diodes (LEDs) and organic light-emitting diodes (OLEDs)).

Traditionally, when testing these electronic components, it is assumed that these electronic components are perfectly spaced at the same distance from each other, and the detection frame is set at the above-preset fixed distance, and the signal (for example: brightness) emitted by the electronic components in the detection frame is further analyzed. However, in reality, electronic components are not perfectly spaced at the same distance from each other. These electronic components have different sizes of offsets in the vertical and horizontal directions. When the offset of an electronic component is large, so that at least part of it is not covered by the detection frame, it will cause distortion of the detection result.

In view of the above problems, the present invention provides a method for positioning objects in an object array, thereby improving the above problems.

To achieve the above-mentioned purpose and other purposes, the present invention provides a method for locating an object in an object array, which includes: (a) selecting two adjacent objects in the object array, wherein the two adjacent objects have a distance that can at least accommodate the two adjacent objects; (b) defining a detection frame with the distance between the two adjacent objects; (c) calculating a center point of the detection frame; and (d) moving the detection frame until the center point of the detection frame touches one of the two adjacent objects to locate the touched object.

In the above method for locating objects in an object array, a square detection frame can be defined with the distance between two adjacent objects as a perimeter.

The above method for locating an object in an object array may further include calculating a center point of the touched object.

The above method for locating an object in an object array, wherein the center point of the detection frame touches one of the two adjacent objects, can make the center point of the detection frame overlap with the center point of the touched object.

The above method for positioning an object in an object array, wherein the object array may be a light emitting diode (LED) chip array.

The above method for locating an object in an object array, wherein the object array may be an image.

To achieve the above-mentioned purpose and other purposes, the present invention also provides a method for detecting the brightness of a light-emitting diode (LED) chip, comprising: positioning the light-emitting diode chip to be detected using the method of positioning an object in an object array as described above; and calculating the brightness of the light-emitting diode chip to be detected in the detection frame.

To achieve the above-mentioned and other purposes, the present invention also provides a device for detecting the brightness of a light-emitting diode (LED) chip, which includes: a carrier platform, which is used to carry a substrate having the light-emitting diode chip to be detected; an image capture mechanism, which is arranged adjacent to the carrier platform, which is used to capture an image of the substrate; a control unit, which is connected to the carrier platform, which is used to light up the light-emitting diode chip to be detected; and a processing unit, which is connected to the image capture mechanism, which is used to execute the method described in claim 7 to calculate the brightness of the light-emitting diode chip to be detected in the detection frame.

The above-mentioned device for detecting the brightness of a light-emitting diode (LED) chip, wherein the image capture mechanism can be a camera.

The above-mentioned device for detecting the brightness of a light-emitting diode (LED) chip, wherein the substrate may be a thin film transistor (TFT) substrate.

To achieve the above and other purposes, the present invention also provides a computer program, which, after being loaded and executed by a computer, can complete the above method of locating objects in an object array.

To achieve the above and other purposes, the present invention also provides a computer-readable recording medium storing a program. After the program is loaded and executed by a computer, the above-mentioned method of locating an object in an object array can be completed.

The present invention provides a method for positioning an object in an object array, a method for detecting the brightness of a light emitting diode (LED) chip, an apparatus for detecting the brightness of a light emitting diode (LED) chip, a computer program, and a computer-readable recording medium storing the program. By moving the detection frame until the center point of the detection frame touches one of the two adjacent objects, the position of the detection frame can be brought close to the actual position of the object, thereby accurately defining the position of the object.

101:Detection frame

102: Detection frame

103:Detection frame

104: Detection frame

105: Detection frame

111: Objects

112: Objects

113: Objects

114: Objects

115: Objects

30: Equipment for detecting the brightness of light-emitting diode (LED) chips

31: Carrying platform

311: LED chip to be tested

312: Substrate

32: Image capture mechanism

321: Target substrate

33: Control unit

34: Processing unit

C1: Center point of the detection frame

C2: The center point of the object

D: Periphery

S101: Step

S102: Step

S103: Step

S104: Step

S201: Step

S202: Step

For the convenience of description and clarity, the size of each component in the figure is enlarged, omitted or outlined. At the same time, the size of each component does not fully reflect its actual size.

[Figure 1] is a flow chart of a method for positioning an object in an array of objects according to Embodiment 1 of the present invention; [Figure 2] is a schematic diagram of a method for positioning an object in an array of objects according to Embodiment 1 of the present invention; [Figure 3] is a flow chart of a method for detecting the brightness of a light emitting diode (LED) chip according to Embodiment 2 of the present invention; and [Figure 4] is a schematic diagram of an apparatus for detecting the brightness of a light emitting diode (LED) chip according to Embodiment 3.

Embodiment 1: Method for locating objects in an object array

The flow chart of the method for locating an object in an object array of the present embodiment is shown in FIG1. As shown in FIG1, the method for locating an object in an object array of the present embodiment includes: (a) selecting two adjacent objects in the object array, wherein the two adjacent objects have a distance that can at least accommodate the two adjacent objects S101; (b) defining a detection frame with the distance between the two adjacent objects S102; (c) calculating a center point of the detection frame S103; and (d) moving the detection frame until the center point of the detection frame touches one of the two adjacent objects to locate the touched object S104.

FIG. 2 is a schematic diagram of a method for locating an object in an object array according to Embodiment 1. As shown in FIG. 2 , objects 111, 112, 113, 114, 115 form an object array, and objects 111, 112, 113, 114, 115 are not perfectly arranged on the same straight line with the same spacing, that is, objects 111, 112, 113, 114, 115 have offsets of varying sizes in the vertical and horizontal directions. In this embodiment, step (a) is to first select objects 111, 112, and in step (b) a detection frame 101 is defined by the spacing between objects 111, 112. A center point of the detection frame calculated in step (c) is shown as the intersection of the cross dashed lines in the detection frame 101 of FIG. 2 . As shown in FIG. 2 , in step (d), the detection frame 101 is moved to a position where its center touches the object 111 to locate the object 111. Embodiment 1 further repeats the above steps until the detection frames 102, 103, 104, 105 are moved to a position where their center touches the objects 112, 113, 114, 115 to locate the objects 112, 113, 114, 115.

As can be seen from Figure 2, by moving the detection frame until the center point C1 of the detection frame touches one of the two adjacent objects, the position of the detection frame can be brought close to the actual position of the object, thereby accurately defining the position of the object.

In this embodiment, the distance between two adjacent objects 111 and 112 is used as a perimeter D to define a square detection frame 101, but the present invention is not limited thereto. A person with ordinary knowledge in the technical field to which the present invention belongs can determine the shape and size of the detection frame as needed.

In this embodiment, the length of the distance between two adjacent objects 111 and 112 is sufficient to place two objects. That is, the length of the distance is greater than or equal to the side length of the two objects.

In a preferred embodiment, the area of the detection frame is at least 4 times the area of the object, thereby ensuring that after step (d), the detection frame can completely cover the object it locates. In one embodiment, the area of the detection frame is at least 3.4 times the area of the object.

In a preferred embodiment, the center point C2 of the touched object (the thicker cross in FIG. 2 ) may be further calculated to more accurately define the position of the object. In one embodiment, the spacing is the distance between the center points C2 of two adjacent objects.

In a preferred embodiment, the center point of the detection frame can be overlapped with the center point of the touched object, thereby more accurately defining the position of the object.

In this embodiment, the object array is a light emitting diode (LED) chip array, but the present invention is not limited thereto. A person with ordinary knowledge in the technical field to which the present invention belongs can determine the object array to be positioned as needed.

In a preferred embodiment, the object array may be an image, that is, an image capture unit captures the image of the object array and locates the objects in the image.

As described above, this embodiment moves the detection frame until the center point of the detection frame touches one of the two adjacent objects, so that the position of the detection frame can be brought close to the actual position of the object, thereby accurately defining the position of the object.

In a preferred embodiment, when step (a) is initially executed, a first object and a second object adjacent to each other are selected to define a first detection frame, and after step (d) is initially executed, a third object is further selected from the object array, the third object being adjacent to an object among the first object and the second object that is not touched by the center point of the first detection frame in the initial execution of step (d). Then, steps (b)-(d) are repeated to define a second detection frame and a third detection frame, and the second detection frame and the third detection frame are used to locate the first object and the untouched object among the second object, respectively, and the first detection frame, the second detection frame, and the third detection frame have two detection frame distances therebetween. Then, an average detection frame distance is calculated based on the two detection frame distances, and the position of the next detection frame is calculated based on the average detection frame distance and the position of the third detection frame. Then, the next detection frame is set at the position of the next detection frame. The sizes of the two detection frame distances are different.

In the above preferred implementation, by calculating the average detection frame spacing to locate the position of the next detection frame, the position of the next detection frame can be made closer to the position of the next object, thereby reducing the time required for the center point of the detection frame to touch the object in step (d), thereby improving the efficiency of locating the object.

Example 2: Method for detecting the brightness of a light-emitting diode (LED) chip

The flow chart of the method for detecting the brightness of the light emitting diode (LED) chip of this embodiment is shown in FIG3. As shown in FIG3, the method for detecting the brightness of the light emitting diode (LED) chip of this embodiment includes: positioning the light emitting diode chip to be detected using the method for positioning objects in an object array as described in Example 1 S201; and calculating the brightness of the light emitting diode chip to be detected in the detection frame S202. In one embodiment, the brightness of the light emitting diode chip is calculated based on the grayscale of the pixels in the image. For example, a grayscale value of 50 or more is defined as bright, and there are 9 pixels in the detection frame with grayscale values of 50 or more, and the brightness of the light emitting diode chip is 9. However, the present invention is not limited to this, and different grayscale values can be defined according to different product states.

The method for detecting the brightness of a light emitting diode (LED) chip of this embodiment makes the position of the detection frame close to the actual position of the object by the method shown in Embodiment 1, thereby accurately defining the position of the object, which can effectively avoid the problem of distorted detection results caused by setting the detection frame with a preset fixed spacing in the traditional way when the offset of an electronic component is large and at least part of it is not covered by the detection frame.

Example 3: Equipment for detecting the brightness of light-emitting diode (LED) chips

FIG4 is a schematic diagram of an apparatus for detecting the brightness of a light emitting diode (LED) chip of Embodiment 3. As shown in FIG3, the apparatus 30 for detecting the brightness of a light emitting diode (LED) chip of this embodiment comprises: a carrying platform 31, which is used to carry a substrate 312 having the light emitting diode chip 311 to be detected; an image capturing mechanism 32, which is disposed adjacent to the carrying platform 31, and is used to capture an image of the substrate 312; a control unit 33, which is connected to the carrying platform 31, and is used to light up the light emitting diode chip 311 to be detected; and a processing unit 34, which is connected to the image capturing mechanism 32, and is used to execute the method described in Embodiment 2 to calculate the brightness of the light emitting diode chip 311 to be detected in the detection frame.

In this embodiment, the control unit provides current to the LED chip to be tested so that the LED chip to be tested can work and emit light.

In this embodiment, the image capture mechanism is a camera, but the present invention is not limited to this.

In this embodiment, the substrate is a thin film transistor (TFT) substrate, but the present invention is not limited thereto.

As described above, the device for detecting the brightness of a light emitting diode (LED) chip of this embodiment calculates the brightness of the light emitting diode chip to be detected in the detection frame by executing the method described in Embodiment 2, so that the position of the detection frame can be close to the actual position of the object, thereby accurately defining the position of the object, thereby effectively avoiding the problem of distorted detection results caused by setting the detection frame with a preset fixed spacing in the traditional way when the offset of an electronic component is large and at least part of it is not covered by the detection frame.

Example 4: Computer program

The computer program of this embodiment, after being loaded and executed by a computer, can complete the method of locating objects in an object array as described in Embodiment 1.

When the computer program of this embodiment is executed, the position of the detection frame can be made close to the actual position of the object, thereby accurately defining the position of the object.

Embodiment 5: Computer-readable recording medium storing programs

The computer storing the program in this embodiment can read the recording medium. After the program is loaded and executed by the computer, the method of locating objects in an object array as described in Embodiment 1 can be completed.

When a computer executing the internal storage program of this embodiment can read the program stored in the recording medium, the position of the detection frame can be made close to the actual position of the object, thereby accurately defining the position of the object.

In summary, the method for positioning an object in an object array, the method for detecting the brightness of a light emitting diode (LED) chip, the device for detecting the brightness of a light emitting diode (LED) chip, the computer program, and the computer-readable recording medium storing the program can make the position of the detection frame close to the actual position of the object, thereby accurately defining the position of the object.

In addition, the method and device for detecting the brightness of a light-emitting diode (LED) chip of the present invention can effectively avoid the problem of distorted detection results caused by setting the detection frame with a preset fixed spacing in the traditional way, when the offset of an electronic component is large and at least part of it is not covered by the detection frame.

S101: Step

S102: Step

S103: Step

S104: Step

Claims (12)

A method for locating an object in an object array, comprising: (a) selecting two adjacent objects in the object array, wherein the two adjacent objects have a distance that can at least accommodate the two adjacent objects; (b) defining a detection frame based on the distance between the two adjacent objects; (c) calculating a center point of the detection frame; and (d) moving the detection frame until the center point of the detection frame touches one of the two adjacent objects to locate the touched object. A method for locating an object in an object array as described in claim 1, wherein a square detection frame is defined with the distance between the two adjacent objects as a perimeter. A method for locating an object in an object array as described in claim 1, further comprising calculating a center point of the touched object. A method for locating an object in an object array as described in claim 3, wherein the center point of the detection frame touches one of the two adjacent objects so that the center point of the detection frame overlaps with the center point of the touched object. A method for positioning an object in an object array as described in claim 1, wherein the object array is a light emitting diode (LED) chip array. A method for locating objects in an object array as described in claim 1, wherein the object array is an image. A method for detecting the brightness of a light-emitting diode (LED) chip, comprising: Using the method for positioning an object in an object array as described in any one of claims 1 to 6 to locate a light-emitting diode chip to be detected; and Calculating the brightness of the light-emitting diode chip to be detected in the detection frame. A device for detecting the brightness of a light-emitting diode (LED) chip, comprising: a carrier platform, which is used to carry a substrate having a light-emitting diode chip to be detected; an image capture mechanism, which is arranged adjacent to the carrier platform, and is used to capture an image of the substrate; a control unit, which is connected to the carrier platform, and is used to light up the light-emitting diode chip to be detected; and a processing unit, which is connected to the image capture mechanism, and is used to execute the method described in claim 7 to calculate the brightness of the light-emitting diode chip to be detected in the detection frame. An apparatus for detecting the brightness of a light emitting diode (LED) chip as described in claim 8, wherein the image capture mechanism is a camera. An apparatus for detecting the brightness of a light emitting diode (LED) chip as described in claim 8, wherein the substrate is a thin film transistor (TFT) substrate. A computer program, after being loaded and executed by a computer, can implement the method of locating an object in an object array as described in any one of claims 1 to 6. A computer-readable recording medium storing a program can complete the method of locating an object in an object array as described in any one of claims 1 to 6 after the program is loaded into a computer and executed.

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