CN112179494B - Method for calculating color required by touch screen in touch display system - Google Patents
Method for calculating color required by touch screen in touch display system Download PDFInfo
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- CN112179494B CN112179494B CN202011061637.3A CN202011061637A CN112179494B CN 112179494 B CN112179494 B CN 112179494B CN 202011061637 A CN202011061637 A CN 202011061637A CN 112179494 B CN112179494 B CN 112179494B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 239000003086 colorant Substances 0.000 claims abstract description 7
- 239000004568 cement Substances 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 239000012790 adhesive layer Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 abstract description 5
- 238000004088 simulation Methods 0.000 abstract description 2
- 238000012795 verification Methods 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013041 optical simulation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
- G01J2003/467—Colour computing
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Position Input By Displaying (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention discloses a method for calculating colors required by a touch screen in a touch display system, which comprises the steps of measuring the chromatic value of the display screen by a measuring instrument under the condition that the target chromatic value of the touch display screen system is known through a self-designed method for calculating the chromatic value of the touch screen, and obtaining the chromatic value required by the touch screen through addition and subtraction operation by introducing chromatic difference values delta L, delta a and delta b, thereby providing accurate data guidance for the design and specific production of a film system of the touch screen; the method replaces the extensive method that in the prior art, membrane system design software is used for building a touch screen membrane system in advance in a blind mode, then verification is carried out through simulation of optical structure design software, and the target chromaticity value is gradually approached through repeated adjustment, so that the working efficiency is greatly improved, the useless occupation of the design software is reduced, and the enterprise cost is reduced to a certain extent.
Description
Technical Field
The invention belongs to the technical field of touch control and display, and particularly relates to a method for calculating colors required by a touch screen in a touch control display system.
Background
Currently, touch technology is still mainly applied to external touch, especially to medium and large sizes. The touch screen is arranged outside the display screen to form a touch display system, which is called a touch display screen for short.
The touch screen is mainly adhered to a display screen through three major components, namely a cover plate, touch glass and the display screen by using optical cement OCA or OCR. The display screen has high production investment and high technical difficulty, so that it is very important for most touch screen manufacturers to know what cover plate and touch glass (combined into a touch screen) are suitable for the display screen.
Under the general condition, a display screen LCM (namely an LCD module) module presents low reflection and neutral colors, a touch screen has darker colors, and the touch screen combined with the display screen is no longer neutral, so that the attractiveness of display is seriously affected, and therefore, the chromatic value of the touch screen needs to be considered when the touch screen is designed and manufactured to avoid the situation.
The current method for solving the problem is to design the membrane system of the touch screen by using membrane system design software TFcalc, macleod and the like, and then substitute optical structure design software Zemax, codev and the like to perform optical simulation of a touch screen system; if the target of the chromatic value is not reached, the film system is designed again by adopting film system design software, and the approximation is repeated for a plurality of times until the optical effect of the touch display screen meets the requirement. The prior art has the following defects:
the method comprises the following steps that 1, membrane system design software and optical structure design software are frequently switched, the operation is complex, and time and labor are wasted; 2, the software needs to be purchased and maintained, and the cost is high; 3, the design process has no accurate data guidance, only can be roughly adjusted by virtue of experience and previous simulation results, gradually approaches to the required chromaticity target, and has more repeated work, thereby greatly reducing the working efficiency.
Therefore, it is necessary to provide a calculation method for calculating the chromaticity target of the required touch screen when the chromaticity target (usually, neutral color, colloquially referred to as "colorless") of the combined display screen and touch screen system is fixed, or calculating the chromaticity target of the required display screen when the chromaticity target of the combined touch screen and touch screen system is fixed, so as to obtain the chromaticity targets of these key components of the touch screen/display screen for guiding the structural design and production of the components.
Disclosure of Invention
The invention aims to provide a method for calculating the color required by a touch screen in a touch display system, which replaces the prior art that a film system of the touch screen is established in advance by using film system design software, then the film system is verified by simulating optical structure design software, and the color is gradually approximated to a chromaticity target value after repeated adjustment; by the aid of the self-designed touch screen chromaticity value calculation method, the chromaticity value of the display screen is measured by the measuring instrument under the condition that the target chromaticity value of the touch screen system is known, and the chromaticity value required by the touch screen is obtained by introducing chromaticity difference values delta L, delta a and delta b and performing addition and subtraction operation, so that accurate data guidance is provided for film system design and specific production of the touch screen.
In order to realize the technical characteristics, the invention adopts the technical scheme that: a method for calculating colors required by a touch screen in a touch display system comprises the following steps:
step S1: determining chromaticity target values L, a and b of the touch screen according to requirements; the touch screen comprises a touch screen and a display screen; the touch screen comprises a substrate, an ITO layer and an optical adhesive layer;
step S2: measuring the colorimetric value of the display screen by using a spectrophotometer or a colorimeter, and recording the colorimetric value as L 1 *、a 1 *、b 1 *；
And step S3: introducing chromaticity differences DeltaL, deltaa and Deltab, and calculating the values of DeltaL, deltaa and Deltab by the following method:
△L*=L*-L 1 *；
△a*=a*- a 1 *；
△b*=b*- b 1 *；
and step S4: testing the substrate colorimetric value in the touch screen by using a spectrophotometer or a colorimeter, and recording the substrate colorimetric value as L 2 *、a 2 *、b 2 *；
Step S5: calculating a target chromaticity value L of the touch screen by the chromaticity difference value 3 *、a 3 *、b 3 * Obtaining a chromatic value required by the touch screen; the calculation method is as follows:
L3*= L2*+△L*；
a3* = a2*+△a*；
b3*= b2*+△b*。
preferably, the optical cement in the step S1 is an OCA/OCR optical cement or an entire version OC3 cement; the optical adhesive is adhered to the surface of the ITO pattern.
The invention has the beneficial effects that:
the method comprises the following steps that 1, a display screen which is high in cost and inconvenient to replace and adjust in a touch display screen system is used as a fixed part in the touch display system, the colorimetric value of the display screen is actually measured through a spectrophotometer or a colorimeter and is different from the target colorimetric value of the touch display system, so that a colorimetric difference value is introduced, and the required colorimetric value of the touch screen can be quickly obtained by utilizing the colorimetric difference value and the actually measured colorimetric value of a substrate in the touch screen; the method provides accurate data guidance for the design and production of the touch screen, avoids the color adjustment method in the prior art of 'design first, verification later and adjustment later', greatly improves the working efficiency, reduces the meaningless occupation of design software, and reduces the enterprise cost to a certain extent.
And 2, adhering optical glue on the ITO pattern surface of the touch screen, so that the influence of optical interference of the film can be avoided.
3, the calculation method is simple, the whole calculation process can be completed through actually measured data and addition and subtraction operation, and matrix operation caused by optical interference is avoided; the calculation method can be written into a program for convenient use and popularization.
Drawings
Fig. 1 is a schematic structural view of a touch screen in the present invention.
FIG. 2 is a schematic diagram of the calculation process and data in the embodiment of the present invention.
The reference numbers in the figures are: the display panel comprises a substrate 1, an ITO layer 2, an optical adhesive layer 3 and a display screen 4.
Detailed Description
Example 1:
as shown in fig. 1 to fig. 2, a method for calculating colors required by a touch screen in a touch display system includes the following steps:
step S1: determining chromaticity target values L =29.06, a =0.01 and b =0.20 of the touch screen according to requirements; the touch screen comprises a touch screen and a display screen; the touch screen comprises a substrate, an ITO layer and an optical adhesive layer;
step S2: the color value of a display screen of LCM2020 is measured by using a spectrophotometer or a colorimeter and is recorded as L 1 *、a 1 *、b 1 *，L 1 *=28.43，a 1 *=-0.92，b 1 *=2.45；
And step S3: introducing chromaticity differences DeltaL, deltaa and Deltab, and calculating the values of DeltaL, deltaa and Deltab by the following method:
△L*=L*-L 1 *=0.63；
△a*=a*- a 1 *=0.93；
△b*=b*- b 1 *=-2.25；
and step S4: testing the colorimetric value of a base plate with the model XXZ11 in the touch screen by using a spectrophotometer or a colorimeter, and recording the colorimetric value as L 2 *、a 2 *、b 2 *，L 2 *=34.02，a 2 *=-0.13，b 2 *=-0.57；
Step S5: calculating a target chromaticity value L of the touch screen by the chromaticity difference value 3 *、a 3 *、b 3 * Obtaining a chromatic value required by the touch screen; the calculation method is as follows:
L3*= L2*+△L*=34.65
a3* = a2*+△a*=0.80；
b3*= b2*+△b*=-2.82。
preferably, the optical cement in the step S1 is OCA/OCR optical cement; the optical adhesive is adhered to the surface of the ITO pattern.
The above-described embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention, and the embodiments and features in the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (1)
1. A method for calculating colors required by a touch screen in a touch display system is characterized by comprising the following steps: it comprises the following steps:
step S1: determining chromaticity target values L, a and b of the touch screen according to requirements; the touch screen comprises a touch screen and a display screen; the touch screen comprises a substrate, an ITO layer and an optical adhesive layer; the optical cement is OCA/OCR optical cement or full-page OC3 cement; the optical cement is pasted on the surface of the ITO pattern
Step S2: measuring the colorimetric value of the display screen by using a spectrophotometer or a colorimeter, and recording the colorimetric value as L 1 *、a 1 *、b 1 *；
And step S3: introducing chromaticity differences DeltaL, deltaa and Deltab, and calculating the values of DeltaL, deltaa and Deltab by the following method:
△L*=L*-L 1 *；
△a*=a*- a 1 *；
△b*=b*- b 1 *；
and step S4: testing the substrate colorimetric value in the touch screen by using a spectrophotometer or a colorimeter, and recording the substrate colorimetric value as L 2 *、a 2 *、b 2 *；
Step S5: calculating a target chromaticity value L of the touch screen through the chromaticity difference value 3 *、a 3 *、b 3 * Obtaining a chromatic value required by the touch screen; the calculation method is as follows:
L3*= L2*+△L*；
a3* = a2*+△a*；
b3*= b2*+△b*。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011061637.3A CN112179494B (en) | 2020-09-30 | 2020-09-30 | Method for calculating color required by touch screen in touch display system |
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| CN112179494B true CN112179494B (en) | 2022-10-21 |
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| CN104103255B (en) * | 2013-04-07 | 2018-09-07 | 深圳富泰宏精密工业有限公司 | Display screen correction system and method |
| CN108648719B (en) * | 2018-03-30 | 2022-03-15 | 中兴通讯股份有限公司 | Screen calibration method, device and system |
| CN111025632B (en) * | 2019-12-27 | 2022-05-10 | 宜昌南玻显示器件有限公司 | Simple design method of combined display system |
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