In-plane switching
screen technology used for liquid crystal displays
In-plane switching (IPS) is a screen technology used for liquid-crystal displays (LCDs). In IPS, liquid crystal molecules are sandwiched between, and aligned parallel to, two panels (planes) of glass substrate. The molecules are reoriented by applying electric field, while remaining essentially parallel to the surfaces to produce an image. It was designed to remedy issues of poor viewing angle and color reproduction of the twisted nematic field effect (TN) matrix LCDs prevalent in the late 1980s.
History
Computer monitors started utilizing active matrix TFT LCD panels in the 1980s and early 1990s, as an alternative technology to the cathode ray tube. These early LCD displays suffered from inverted grayscale, loss of contrast and color reproduction accuracy when viewed from extreme angles, and had significant display motion blur due to poor response time. IPS and vertical alignment (VA) are designed to alleviate these issues.
An early experimental IPS-LCD is described in a 1974 patent. It used inter-digitated electrodes on only one glass substrate, to produce electric field essentially parallel to the glass substrates. However, the inventor was not able to implement IPS-LCDs with superior quality to contemporary TN displays.
Begin with the source’s own compact description: “In-plane switching” is screen technology used for liquid crystal displays. The dossier treats that line as a proposition to test through In-plane, switching and screen, not as a finished interpretation.
Why this record matters
The phrase “screen technology used for liquid crystal displays” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jul 10, 2026. The linked authority identifier is Q2634883. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1974.
A general summary may omit uncertainty, sample limits or methodological disagreement that is explicit in the technical record. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Check terminology, classification and the date of the cited evidence. Scientific names and technical consensus can change while older records retain historical value.
- Current terminology
- Classification context
- Finding cited technical literature
Primary datasets, specimen catalogues, standards bodies and the most recent peer-reviewed literature.
Three-step research path
- Establish the record: confirm the title “In-plane switching”, its source revision and the description used here.
- Expand the search: follow In-plane switching primary sources, In-plane switching archive and In-plane research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “In-plane switching”?
- Which observation, specimen, dataset or publication supports the account?
- Is the terminology current, historical or disputed?
Search terms from this dossier
This entry incorporates text from “In-plane switching” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.