Projection type display device
The projection display device improves resolution by controlling pixel position shifts and light source brightness within a frame period, addressing the cost and size issues of high-speed optical path shifts, thus maintaining display quality.
JP2026109017APending Publication Date: 2026-07-01SEIKO EPSON CORP
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- SEIKO EPSON CORP
- Filing Date
- 2024-12-19
- Publication Date
- 2026-07-01
AI Technical Summary
Technical Problem
Existing projection display devices increase in cost and size due to the need for high-speed optical path shifts to pseudo-increase resolution, which leads to potential degradation in display quality.
Method used
A projection display device with a light source, liquid crystal panels, and an optical path shift element controlled by a display control circuit to shift pixel positions within a frame period, utilizing dimming and brightness control of the light source to enhance resolution without high-speed optical path shifts.
Benefits of technology
Enhances display resolution without increasing device size or cost, maintaining display quality by controlling pixel position shifts and light source brightness, effectively increasing the visible image pixels per panel pixel.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026109017000001_ABST
Abstract
This technology artificially increases resolution without increasing the cost or size of the equipment. [Solution] The display control circuit shifts the position of the projection pixel from the first position, which is the stationary position in unit period f1, to the second position, which is the stationary position in unit period f3, to the optical path shift element during a unit period f2 of one frame period, setting the first position as image pixel A1 in unit period f1, the second position as image pixel A3 in unit period f3, and the position between image pixels A1 and A3 as A2 in unit period f2. The lamp unit lights up at twice the brightness of unit periods f1 and f2 during the period from timing t21 to t22 of unit period f2, and turns off during the rest of the period.
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