Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Light pen

A light pen and light detection technology, which is applied in the direction of telephone structure, telephone communication, instruments, etc., can solve the problems of increasing the weight and volume of the light pen, misunderstanding, fatigue, etc.

Active Publication Date: 2006-05-03
SAMSUNG DISPLAY CO LTD
View PDF1 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the user must always apply a pressure greater than a predetermined value to the surface of the display device with a conventional light pen
Therefore, when the user presses the surface of the display device for a long time with a conventional light pen, he will feel tired
In addition, the display unit may be scratched and damaged by the light pen
In addition, traditional light pens contain lenses and have complex structures
Therefore, the manufacturing cost of the light pen will be increased, and the weight and volume of the light pen will be increased
In addition, the light sensor may mistake ambient light for light generated by the stylus, causing the display device to operate in an incorrect manner

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light pen
  • Light pen
  • Light pen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] figure 1 is a schematic diagram showing a light pen according to a first exemplary embodiment of the present invention.

[0051] refer to figure 1 , the light pen 100 includes a main body 110 , a light detection module 120 , a control module 130 , a light generation module 140 and a power supply module 150 .

[0052] The main body 110 has a cylindrical shape, and has an inner space to accommodate the light detection module 120 , the control module 130 , the light generation module 140 and the power supply module 150 . An opening 112 is formed at one end of the main body 110, and light generated from the light generating module 140 exits from the opening 112 .

[0053] The light detection module 120 is disposed in the main body 110 . The light detection module 120 detects the image light 10 input from an external source. Image light 10 is generated from a display device such as a liquid crystal display device. The light detection module 120 is capable of detecting w...

Embodiment 2

[0066] figure 2 is a schematic diagram showing a light pen according to a second exemplary embodiment of the present invention. In Embodiment 2, all elements except the light generating module represent the same elements in Embodiment 1, and will not be further described below in order to avoid repetition.

[0067] The light generating module 140 may include various combinations of red light emitting diodes (LEDs) 143 , green LEDs 144 and blue visible light emitting diodes (LEDs) 145 . The red LED produces red visible light 143a having a frequency corresponding to red, the green LED produces green visible light 144a having a frequency corresponding to green, and the blue LED produces blue visible light 145a having a frequency corresponding to blue.

[0068] For example, the light generating module 140 may include only one of a red light emitting diode (LED) 143 , a green light emitting diode (LED) 144 and a blue light emitting diode (LED) 145 . In addition, the light genera...

Embodiment 3

[0079] Figure 4 is a schematic diagram showing a light pen according to a third exemplary embodiment of the present invention, Figure 5 is displayed Figure 4A partial enlarged view of 'A'. In Embodiment 3, all elements except the light concentrating cover represent the same elements in Embodiment 1, and will not be described below to avoid repetition.

[0080] refer to Figure 4 or Figure 5 , the light collecting cover 146 collects the sensing light 142 generated from the light generating module 140 and enhances the brightness of the sensing light 142 .

[0081] The condensing cover 146 may have a cup shape and be disposed near the opening 112 . The light generating module 140 connected to the control module 130 is disposed within the light collecting cover 146 . The sensing light 142 generated from the light generating module 140 is reflected from the light collecting cover 146, and the sensing light 142 is concentrated.

[0082] A light reflection layer 147 may al...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A light detection LCD device includes a light pen (100). The light pen includes a main body (110), a driving pulse generating module (135) and a light generating module (140). The body has the shape of a pen, and one end of the body includes an opening (112) through which light exits. The driving pulse generating module is disposed in the body and generates first and second driving energy pulses having first and second frequencies respectively. The light generating module generates first and second light respectively in response to the first and second driving energy pulses. The first and second lights flash at third and fourth frequencies respectively. Energy consumption is reduced and the brightness of the induction light is enhanced. The light pen generates light with at least two different frequencies, and the display device effectively identifies the light generated by the light pen. Therefore, the display device can operate without problems.

Description

technical field [0001] The present invention relates to a light pen, a light detection liquid crystal display device, and a display device with the light pen. Background technique [0002] Display devices may be classified into cathode ray tube (CRT) type display devices, electro luminescence display devices (ELD) and liquid crystal display (LCD) devices. [0003] A first-type display device receives a video signal from an information processing device and converts the video signal to display an image. The first type of display device communicates with the information processing device in a one-way manner. The user inputs data into the information processing device through an input device, such as a keyboard, a button, a mouse, and the like. [0004] The second-type display device receives a first video signal from the information processing device, converts the first video signal to display an image, and also outputs a signal input by a user to a screen of the display dev...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G06F3/0354G09F9/35G09G3/36
CPCH04M1/0216H04M1/0237H04M1/0264H04M1/22H04M2250/20
Inventor 曹宗奂朴商镇朴源祥鱼其汉金炯杰郑载勋
Owner SAMSUNG DISPLAY CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com