Glass substrate for display device, liquid crystal display panel and liquid crystal display device
A technology for liquid crystal display panels and liquid crystal display devices, which is applied in glass forming, glass forming, glass manufacturing equipment, etc., can solve problems such as increased cost, uneven display, and reduced degree of correction.
Inactive Publication Date: 2011-01-26
NIPPON SHEET GLASS CO LTD
View PDF3 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] Unfortunately, however, in order to eliminate the above-mentioned display unevenness, all of the above-mentioned related techniques involve post-processing such as polishing after the raw plate is manufactured, thus raising the cost.
[0006] In addition, the degree of the above-mentioned correction by the surface tension of the liquid crystal decreases as the period of the minute irregularity decreases.
Therefore, the display unevenness caused by the short-period unevenness cannot be eliminated by the method of the related art
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0025] In order to achieve the above objects, the present inventors conducted intensive studies, and as a result, found that a sheet glass having a balanced thickness is produced by applying tensile stress in two directions perpendicular to each other in the plane of the glass surface. In glass substrates for display devices with a size of mm, if the period D of the filter waviness curve in the spatial frequency range of 2 lines / mm to 500 lines / mm based on spectral analysis is greater than 20 mm under the measurement conditions of the cut-off value of 0.8 mm to 8 mm , the amplitude A of the filtered waviness curve is 2×(1.1 / t) 3 μm or less, and if the amplitude A is 18 nm or more when the period D is 20 mm or less and t is 1.1 mm, the display of the liquid crystal display panel can be eliminated after the glass substrate is assembled into the liquid crystal panel (hereinafter referred to as "unit assembly") non-uniform, and eliminate or simplify the need for post-processing. ...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
This object aims to provide a glass substrate for a display device, a liquid crystal display panel and a liquid crystal display device that are configured to get rid of uneven display on a display panel in which cell assembly is completed and to require no post process or to simplify a post process. A liquid crystal panel (30) is provided with glasses (10, 32) arranged opposite to each other, a liquid crystal layer (34) that is inserted between the two glasses (10, 32), and ball-like spacers (33a, 33b) that are arranged in contact with the opposite surfaces of the two glasses (10, 32). Under such measurement conditions that the glass (10) is11 mm in thickness and a cutoff value is in the range of 0.8-8mm, an amplitude (A) is equal to or less than 2[mu]m when a period (D) between spatial frequencies in the range of 2-500 / mm in accordance with a spectral analysis of a filtered waviness curve is equal to or more than 20 mm and the amplitude (A) is equal to or more than 18 nm when a period (D) is equal to or less than 20 mm.
Description
technical field [0001] The present invention relates to a glass substrate for a display device, a liquid crystal display panel and a liquid crystal display device. Background technique [0002] As a substrate of a common liquid crystal display device, a 3 mm to 5 mm thick float glass plate is used. Such a float glass sheet has undulations in a direction perpendicular to the direction of flow of the float. These fluctuations are continuous in the flow direction of the floating body. That is, a stripe-like pattern is formed in a direction parallel to the flow direction of the float in the float glass plate. These fluctuations affect the optical uniformity of surface reflection, so if a glass substrate is assembled to a liquid crystal panel (hereinafter referred to as "cell assembly") with a large number of these fluctuations formed, display unevenness may occur . [0003] As a method of removing these fluctuations to eliminate the above-mentioned display unevenness, it is ...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333C03B18/06C03C19/00
CPCC03B17/068G02F2001/133302C03B18/06C03C27/06G02F1/133302Y10T428/24669
Inventor 筏井正博藤田浩示
Owner NIPPON SHEET GLASS CO LTD