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Display device and portable mobile apparatus

A technology for mobile devices and displays, applied in the direction of digital output to display devices, static indicators, instruments, etc., can solve problems such as difficulties, affecting display functions, and reducing the function of liquid crystal materials

Inactive Publication Date: 2002-10-09
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the display device and the secondary battery have opposite characteristics to each other. It is generally believed that in order to realize the miniaturization and weight reduction of portable mobile devices, and further realize the miniaturization, weight reduction and thinning of the display, it is necessary to combine the display device and the secondary battery. It is difficult to form one body together
[0008] In fact, the problem is that display devices such as liquid crystal units have poor tolerance to heat and stress, and the heat generated by the charging and discharging of secondary batteries will significantly reduce the function of liquid crystal materials and affect the display function.

Method used

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  • Display device and portable mobile apparatus
  • Display device and portable mobile apparatus
  • Display device and portable mobile apparatus

Examples

Experimental program
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Effect test

experiment example 1

[0095] On the back of the glass transmissive liquid crystal panel as a liquid crystal display device (liquid crystal cell), arrange an optical diffusion sheet, a light guide plate with a thermal conductivity of 0.2W / m·K, and an aluminum laminated lithium-ion secondary For the battery, a cold cathode tube as a tubular light source is placed around the light guide plate to form a single unit. Assuming that the display is carried under the highest temperature condition, the power-on operation of the display was tested in a constant temperature bath at 45°C. The temperature inside the liquid crystal cell was 45°C, and the temperature on the surface of the secondary battery was 48°C. In the liquid crystal display of the display, deformation, color unevenness, etc. due to the influence of temperature did not occur.

experiment example 2

[0097] On the back of the glass transmissive liquid crystal panel as a liquid crystal display device (liquid crystal unit), arrange a light guide plate and an aluminum laminated lithium-ion secondary battery with a thermal conductivity 0.2W / m·K reflective sheet, and place it on the back of the light guide plate A cold-cathode tube as a tubular light source is placed around it to form a single unit. Assuming that the display will be carried under the highest temperature conditions, the power-on operation of the display was tested in a constant temperature bath at 45°C. The temperature on the back of the liquid crystal cell was 45°C, and the temperature on the surface of the secondary battery was 48°C. In the liquid crystal display of the display, deformation, color unevenness, etc. due to the influence of temperature did not occur.

experiment example 3

[0099] On the back of the glass transmissive liquid crystal panel as a liquid crystal display device (liquid crystal cell), arrange an optical diffusion sheet, a light guide plate with a thermal conductivity of 0.2W / m·K, and an aluminum laminated polymer lithium ion with a reflective sheet The secondary battery is made of a single unit by arranging a cold cathode tube as a tubular light source around the light guide plate. Assuming that the display is carried under the highest temperature condition, the power-on operation of the display was tested in a constant temperature bath at 45°C. The temperature on the back of the liquid crystal cell was 45°C, and the temperature on the surface of the secondary battery was 48°C. It can be seen that in the liquid crystal display of the display, deformation, color unevenness, etc. caused by the influence of temperature did not occur.

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Abstract

The display (10) has a display device (11) such as a liquid crystal unit, and a thin secondary battery (12) is arranged on the back side of the display device (11). Between the display device (11) and the secondary battery (12), a heat blocking layer with a thermal conductivity of 5 W / m·K or less, preferably 1 W / m. , making the display device (11) and the secondary battery (12) form an assembly structure. The present invention realizes the miniaturization, light weight and thinning of the display by integrating the display device such as the liquid crystal unit and the thin secondary battery into an assembly structure.

Description

technical field [0001] The present invention relates to a display provided in a portable mobile device such as a portable telephone, a notebook computer, and a portable information terminal device, and particularly relates to a display device having a module structure in which a display device and a thin secondary battery are integrated, and a device incorporating the display device. Portable mobile device. Background technique [0002] Due to the rapid spread of portable mobile devices such as mobile phones and notebook computers, portable mobile devices tend to be miniaturized. On the one hand, assembly parts tend to be miniaturized and semiconductor elements are reduced. The display device of the unit is getting bigger and bigger. [0003] Also, with the rapid spread of portable mobile devices, the demand for secondary batteries for power sources of the devices is rapidly expanding. Demands for smaller, thinner, lighter and higher capacity secondary batteries are also i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13G02F1/133G09F9/00H01M2/10H01M10/05H01M10/0525H01M10/058H04B1/38
CPCG02F1/133308G02F1/133382G02F1/133385H01M10/052Y02E60/10Y02P70/50H04B1/38
Inventor 小岩馨长谷部裕之佐藤麻子门马旬
Owner KK TOSHIBA
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